The wire in the figure carries a current of 16 A. magnetic field Questions and Answers - TopperLearning Particle B represents a neutron since there is no deflection in its path due to its larger mass. What causes the Earth's magnetic field? Magnetic fields can be illustrated by using continuous force lines of magnetic flux that emanate from north-pointing magnetic poles and enter south-pointing magnetic poles. Test your understanding with practice problems and step-by-step solutions. copyright 2003-2023 Homework.Study.com. If the speed of particle 1 is three A closely wound circular coil with a radius of 2.30 cm has 770 turns. Consider the figure below. (a) 1.4 micro T (b) 1.1 mi A square wire with a side length of 1 cm is in the x-y plane with a current of 3.25 A running counterclockwise, as seen from above. The currents in wires A and C are out of the paper, while that in wire B is into the paper. Four straight segments of wire- ab, bc, cd, and da-from a closed loop that carries a current I = 4.60 A in the direction shown. State true or false. Suppose that the charge An electron is moving at 2.5 x 10^6 m/s perpendicular to a uniform 3.5 x 10^-3 T magnetic field. What is Bz, the z-c What is the magnetic field direction at A, B, and C using the first-hand rule? Magnetic flux density B is calculated in tesla (newton per meter per ampere). A proton describes a circular orbit of radius 27 cm perpendicular to a magnetic field of modulus 1.2 T. Find the modulus of its velocity (in m/s). a) = 90 o. The weber is the SI unit of magnetic flux. \(\displaystyle (1.61\hat{j}0.58\hat{k})10^{14}N\). Two bar magnets with opposite poles close together. b. Apart from this interaction, a magnetic field that changes with location will apply a force to some non-magnetic substances by influencing the movement of their outer atomic electrons. (d) Into the page. A rod with resistance R lies across frictionless conducting rails in a constant uniform magnetic field B, pointing out of the paper. A proton is moving perpendicular to a magnetic field at 3.0 E6 m/s and experiences a magnetic force of magnitude 2.5 E-16 N. What is the magnitude of the magnetic field? 12.A: Sources of Magnetic Fields (Answers) - Physics LibreTexts Determine the initial direction of the deflection of charged particles as they enter the magnetic fields. A positively charged particle of mass 6.25 x 10^-8 kg is traveling due east with a speed of 60.3 m/s and enters a 0.278 T uniform magnetic field. The triangular loop of wire shown in the drawing carries a current of I = 6.15 A. 6. The two wires shown in the figure below are separated by d = 12.1 cm and carry currents of I = 4.65 A in opposite directions. We can model such a bolt as a very long current-carrying wire. Current flows counterclockwise through one, and counterclockwise through the other one. (b) Out of the page. 11.2 Magnetic Fields and Lines - OpenStax Calculate the magnetic field due to a set of two wires with antiparallel currents as shown in the diagram. Explain the nature of sunspots and the chronology of a sunspot cycle. If instead of the electrons, protons were accelerated to the same velocity v in the same magnetic field B, what differences would it make? The figure below shows a section of an overhead power line that is 57.5 m long and carries a current of 2.00 kA. (Figure below) (1) What is the magnitude of the magn Two separate, concentric current loops lie in the same plane (see the figure below). to plot a magnetic field pattern. In the wire shown in the figure segment BC is an arc of a circle with a radius of 30.0 cm, and point P is at the center of curvature of the arc. Magnetic Field Quizzes Online, Trivia, Questions & Answers - ProProfs The magnetic field lines inside a current-carrying solenoid are parallel and equidistant which means the strength of the magnetic field is uniform inside the solenoid i.e. Electric and Magnetic Fields MCQ [Free PDF] - Objective Question Answer (Assume the conductors li Two long, parallel conductors, separated by 13.0 cm, carry currents in the same direction. A proton is traveling down at 3.2 x 104 m/s in a constant magnetic field of magnitude B = 25 mu T pointing west. Trivia Quiz Magnetism is the force wielded by magnets when they attract or repel each other. Magnet Questions - Practice Questions with Answers & Explanations - BYJU'S Using the Biot-Savart law determine the magnetic field B of a very long straight wire caring a current I. One is called magnetic flux density (magnetic induction), denoted by the symbol B. The magnitude of the proton and electron magnetic forces are the same since they have the same amount of charge. Determine the initial direction of the deflection of charged particles as they enter the magnetic fields. 13. Rotating magnetic fields are applied in both electric generators and motors. Calculate the magnitude of the B-field at point 'p'. Magnetic Fields - AP Physics 2 - Varsity Tutors e. Into the page. Electromagnetism Questions - Practice Questions with Answers & Explanations An electron is projected vertically upward with a velocity of 1.40 x 10^9 m/s in a uniform magnetic field of 0.540 T that is directed horizontally way from the observer (A) Describe the electron's A circular loop of radius 10 cm carrying a current of 2.0 A, placed inside a magnetic field 15 T k. The normal to the loop is parallel to a unit vector n = 0.60i - 0.80j. (a) Down. In the diagram below, a particle moves along a circle in a region of a uniform magnetic field of magnitude B = 4.6 mT. Observe that a proton moving at 1.60 km/s in the +x-direction experiences a force of 2.06 x 10^-16 N in the A rocket zooms past the earth at v = 2.0 x 10^6 m/s. \(\displaystyle 9.610^{12}N\) toward the south; b. Two types of vectors are in use to represent a magnetic field. Using the right-hand rule for circular loop wires, determine the direction of the resulting magnetic field (determine if the north and the south poles point either up, down, left, right, inside, or One component of a magnetic field has a magnitude of 0.0429 T and points along the +x axis, while the other component has a magnitude of 0.0646T and points along the -y axis. The velocity of the particle is not perpendicular t Three particles move through a constant magnetic field and describe the paths shown, Classify the particles as positive, negative, or neutral. Determine the magnitude and direction of the net magnetic field at point 1. It moves perpendicular to a 0.76 T magnetic field on a circular path that has a 0.014 m radius. Your Mobile number and Email id will not be published. Magnetic fields test questions - AQA - GCSE Physics (Single - BBC The Earth creates its own magnetic field that protects the Earths atmosphere from the solar winds. In the diagram below, the two wires carry currents i1 and i2, respectively, with the positive current to the right. If v = 0, then the f A loop of wire has the shape of a right triangle (see the figure) and carries a current of I = 4.90 A. The charge q is positive and has velocity v to the right. Two parallel, conducting wires carry oppositely direction currents of 3.0 A and 5.0 A as shown the diagram below. The place where the magnetic forces are strongest . A magnetic field of 0.710 T is directed parallel to the plane of the loop. Get help with your Magnetic fields homework. A current of 3.6 A flows through this loop, clockwise when viewed from below. Determin A bar magnet with the north pole facing down is dropped above a conducting ring. The figure shown below is an end view of the conductors. b. The drawing shows two perpendicular, long, straight wires, both of which lie in the plane of the paper. The charge q is positive and has the velocity v to the right. c. Upward. Answer: b) Scalar quantity. Which one of the following is true about the magnet's acceleration as it passes through the ring? How does For a typical monitor, what magnetic field strengths can be tolerated in the vicinity without distorting the image? The triangular loop of wire shown in the drawing carries a current of I = 4.41 A. The correct answer is the same at all points. Page Number: 228 Question 1 1. b. The other component is magnetic field strength (magnetic field intensity), denoted by the symbol H. The cosmic ray proton in interstellar space has an energy of 22.5 MeV entering our solar system where the interplanetary magnetic field has a magnitude of 5.00 nT and is perpendicular to the veloci A cosmic ray proton in interstellar space has an energy of 22.5 MeV and executes a circular orbit having a radius equal to that of Mars' orbit around the Sun (2.28 x 10^11 m). Consider the mass spectrometer shown schematically in the diagram below. 6) Explain the components of magnetic fields. is the distance from the center of the loop A circular circuit is powered by a battery. Field lines are crowded together at the poles as magnetic fields are denser there. (b) Out of the page. When a current travels through a wire wrapped around a soft-iron cylinder, the field H is very weak. Find the magnitude and A neutron is traveling west at 1.5 x 10^4 m/s in a constant magnetic field of magnitude B = 115 mu T pointing north. A proton is moving perpendicular to a magnetic field at 3.0 x 10^6 m/s and experiences a magnetic force of magnitude 2.5 x 10^-16 N. What is the magnitude of the magnetic field? Magnets can occur naturally (such as the Earth's magnetic field), or they can be made by magnetizing ferromagnetic materials. Magnetic field is the region present around a magnet where force of attraction or repulsion is present. Consider the wires shown in (Figure). Stay tuned to BYJUS and Fall in Love with Learning! Determine the initial direction of the deflection of charged particles as they enter the magnetic fields shown in the figure. A circular coil of wire has 50 turns, a radius of 0.15 meters, and a resistance of 1.9 ohms. What is the magnitude of the force on an electron that is moving at a speed of 6.7 x 10^6 m/s at the moment it enters into 3.2 T magnetic field as shown in the below figure? The total amount of energy stored in an LC series circuit is 8.0 J. Why don't galaxies have a natural magnetic field like the earth does? (d) Into the page. Browse through all study tools. Find the magnetic field at point P. A charged particle with charge q = -84.0 C is moving with velocity vector v = (204) cap i + (0) cap j + (404) cap k m/s. The electron in the Bohr model of the hydrogen atom moved in a circular orbit with radius 5.3 x 10^-11 m with a speed of 2.2 x 10^6 m/s. The force is very small, so this implies that the effect of static charges on airplanes is negligible. I need help with the following question about magnetic fields . a. HC Verma Class 12 Physics Part-2 Solutions for Chapter 34 - Magnetic Field The wire on the left carries a current I1 of 6.0 A into the plane of the paper. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. Find the direction of the force this A proton traveling at 4.40 km/s suddenly enters a uniform magnetic field of 0.770 T, traveling at an angle of 55.0 degrees with the field lines, as shown below. A vector function as defined below, show that it corresponds to Gauss's law of magnetism vector B = 10x i + 20yi - 30z k. Given a pair of parallel conducting rails that are separated by a distance d = 19.8 cm lies at a right angle to a uniform magnetic field of B = 0.500 T directed into the screen. Determine the initial direction of the deflection of charged particles as they enter the magnetic fields, as shown in the figure below. We understand that magnets have two poles and that depending on . (Note that the wire is not long.) In a futuristic world without gravity, a charged sloth (m = 20 kg, q = 3 C) at an astronomical amusement park is sent through the following ride. Magnetic Field MCQ [Free PDF] - Objective Question Answer for Magnetic What is the magnitude of the force on an electron moving with a velocity v = 1.27 x 10^6 m/s at right angles to a magnetic field B = 1.08 x 10^-2 T? To the right. Poor conductors have a lower charge carrier density, n, which, based on the Hall effect formula, relates to a higher Hall potential. In the picture below, the two wires carry currents i1 and i2, respectively, with the positive current to the right. In the figure, a particle moves along a circle in a region of a uniform magnetic field of magnitude B = 4.6 mT. An ion is first accelerated to a speed of 7.50 x 10^7 m/s. Equally divided parallel straight lines denote a uniform magnetic field. A conducting loop in the shape of a square of edge length l = 0.440 m carries a current I = 9.60 A. Dimensionless quantity. T An infinite sheet of thickness delta t lying in yz plane carries a current flow in the positive z direction, of uniform density J along the y-axis. c. This ratio must be an integer because charges must be integer numbers of the basic charge of an electron. Explanation: Since it indicates the magnitude of the magnetic field lines and not the direction, it is considered a scalar quantity. A force on a wire is exerted by an external magnetic field created by a wire or another magnet. The particle is either a proton or an electron (you must decide which). University Physics II - Thermodynamics, Electricity, and Magnetism (OpenStax), { "11.01:_Prelude_to_Magnetic_Forces_and_Fields" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass230_0.
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