ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

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ECAT Physics Chapter 15 Important MCQ's

Sr.#	Question	Answer
1	The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called	A. Mutual induction B. Mutual inductance C. Capacitance D. Self inductance
2	In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:	A. 0.2 henry B. 0.1 henry C. 0.8 henry D. 0.04 henry
3	Lenz's law is the consequence of	A. Mass B. Energy conservation C. Momentum conservation D. Charge
4	The induced current in the loop can be Increased by	A. Using a stronger magnetic field B. Moving the loop faster C. Replacing the loop by a coil of many turns D. All above
5	The current produced by moving a loop of wire across a magnetic field is called	A. Direct current B. Magnetic current C. Alternating current D. Induced current
6	In magnet-coil experiment, emf can be produced by:	A. Keeping the coil stationary and moving the magnet B. Keeping the magnet stationary and moving the coil C. Relative motion of the loop and magnet D. Any one of above
7	Referring to above figure, current in the coil P grows from zero to its maximum value:	A. At the instant the switch is closed B. At the instant the switch is opened C. When switch is kept open D. All of above
8	A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:	A. The coil is destroyed B. The coil is Rotated C. The coil is neither destroyed nor rotated D. Both (A) and (B)
9	A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:	A. The coil is distorted B. The coil is rotated C. The coil is neither distorted nor rotated D. Both A and B
10	When a conductor moved with its length parallel to the lines of magnetic fled:	A. An emf is induced across its ends B. Emf induced is similar to that of a battery C. Emf passes through the conductor D. Both A and B

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ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

ECAT Physics Chapter 15 Electromagnetic Induction

A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

An emf is set up in a conductor when it:

In magnet-coil experiment, emf can be produced by:

In magnet-coil experiment, emf can be produced by:

The current produced by moving a loop of wire across a magnetic field is called

The induced current in the loop can be Increased by

The induced current is a conductor depends upon:

The practical application of the phenomenon of Mutual induction is

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

The unit of induced emf is:

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

The product of induced current and the resistance of the wire through which the current is passing is called:

Michael Faraday and Joseph Henry belong respectively to

The current produced by moving a loop of a wire across a magnetic field is called:

The induced current in the loop can be increased by:

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ECAT Physics Chapter 15 Important MCQ's

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A metal road of length 1m is moving at a speed of 1 ms^-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is: