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Physics - Magnetic Effects Of Current

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16. In transformer, mutual induction takes place if the input is (NTSE Karnataka, Stage-I, 2014-15)

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17. An electron enters a magnetic field at right angles to it, as shown in the figure, the direction of force acting on the electron is

(NTSE Karnataka, Stage-I, 2014-15) (NTSE Rajasthan, Stage-I, 2016-17)

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18. An electron enters a magnetic field at right angle to it as shown in figure. The direction of the force acting on the electron will be

(NTSE, Chhattisgarh, Stage-I, 2014-15) (NTSE, Jharkhand, Stage-I, 2016-17)

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19. A current of i ampere flows along an infinitely long straight thin walled tube of radius r. Then the magnetic induction at any point inside the tube is (NTSE Odisha Stage-I, 2014-15)

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20. A charged particle is moving in a circular path of radius R in a region of constant magnetic field B perpendicular to the plane of the circle. The magnitude of B is suddenly changed to (B + ΔB). Then what changes in the motion of the charged particle will be noticed? (NTSE Odisha, Stage-I, 2014-15)

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Magnetic Effects Of Current