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The magnetic flux through a coil varies with time t as shown in the diagram. Which graph best represents the variation of the e.m.f. E induced in the coil with time t ?

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Important Questions on Electromagnetic Induction

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 9
A coil having 500 square loops each of side 10 cm is placed with its plane perpendicular to a magnetic field which increases at a rate of 1.0 Ts. The induced e.m.f. (in volts) is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 10

A short bar magnet passes at a steady speed right through a long solenoid. A galvanometer is connected across the solenoid. Which graph best represents the variation of the galvanometer deflection θ with time t ?

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 11

A bar magnet is made to fall through a long vertical copper tube. The speed (v) of the magnet as a function of time (t) is best represented by

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 12
A loop of irregular shape made of flexible conducting wire carrying clockwise current is placed in uniform inward magnetic field, such that its plane is perpendicular to the field. Then the loop
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 13
A flat coil of 500 turns, each of area 50 cm2, rotates in a uniform magnetic field of 0.14 Wb m-2 about an axis normal to the field at an angular speed of 150rad s-1. The coil has a resistance of 5Ω .The induced e.m.f. is applied to an external resistance of 10Ω . The peak current through the resistance is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 14
The physical quantity, which is conserved on the basis of Lenz's Law is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 15
An aeroplane is flying horizontally with a velocity of 360 km h-1. The distance between the tips of the wings of aeroplane is 25 m . The vertical component of earth's magnetic field is 4×10-4 Wb m-2 . The induced e.m.f. is
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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 16
A metallic ring with a cut is held horizontally and a magnet is allowed to fall vertically through the ring, then the acceleration of this magnet is