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	Referring to above figure, current in coil P falls from its maximum value to zero:	A. At the instant the switch is closed B. At the instant the switch is opened C. When switch is kept open D. When switch is kept closed
2	When a conductor is moved across a magnetic field, the redistribution of charge sets up:	A. Magnetic field B. Electrostatic field C. Electromagnetic field D. All of these
3	The magnitude of induced emf depends upon the	A. Rate of decrease of magnetic field B. Rate of change of magnetic field C. Rate of increase of magnetic flux D. Constancy of magnetic field
4	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
5	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
6	Faraday's law of electromagnetic induction has been used in the construction of:	A. Galvanometer B. Voltmeter C. Electric motor D. Electric genrator
7	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
8	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
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	What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10^-2Wb, and change in current is 0.01 A?	A. 2 H B. 3 H C. 1/2 H D. Zero

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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 coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when

An induced current can be produced by:

Referring to above figure, a changing current in coil P can be produced:

The induced current in the loop can be Increased by

A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Referring to above figure, current in the coil P grows from zero to its maximum value:

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

The direction of induced current is always so as to oppose the cause which produces it. This is

Michael Faraday and Joseph Henry belong respectively to

The induced current is a conductor depends upon:

The magnitude of induced emf depends upon the:

Referring to above figure, current in coil P falls from its maximum value to zero

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:

Which of the following is most suitable as the core of transformer

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Top Scorers Of ECAT Physics Chapter 15 Electromagnetic Induction MCQ`s Test

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: