Electromagnetic Induction MCQ's 1

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A test from chapter 15 i.e Electromagnetic Induction of Physics part 2. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.

1. A moving coil d Arsenal galvanometer is based on the:

A) Heating effect of current
B) Magnetic effect of current
C) Chemical effect of current
D) Pettier effect of current

2. A moving coil type of galvanometer is based upon the principle that

A) Wire carrying a current experiences a force in magnetic field
B) Wire carrying current produces a magnetic field
C) It has a horse shoe type magnet
D) All

3. In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is

A) Logarithmic
B) Exponential
C) Linear
D) None

4. The coil of a sensitive moving coil galvanometer swings too far on both sides. This movement can quickly be stopped by:

A) Connecting a large resistance across the ends of the coil
B) Holding a magnet near the coil
C) Connecting a short length of copper wire across the ends of the coil
D) Earthing the case of the galvanometer

5. The current that must flow through the coil of a galvanometer so as to produce a deflection of one division on its scale is called

A) Charge sensitivity of the galvanometer
B) Current sensitivity of the galvanometer
C) Micro-volt sensitivity
D) None of the above

6. The sensitivity of moving coil galvanometer depends on:

A) The angle of deflection
B) Earth’s magnetic field
C) Torsion constant of the spring
D) The moment of inertia of the coil

7. The coil of a suspended coil galvanometer has very high resistance. When a momentary current is passed through the coil, it

A) Oscillates with the decreasing amplitude
B) Oscillates with the same amplitude
C) Oscillates with the same amplitude
D) Oscillates with the same amplitude

8. To measure the current in an electric device:

A) Put an ammeter in parallel with it
B) Put an ammeter in parallel with it
C) Put an ammeter in series with it
D) Put an ammeter in series with it

9. The best instrument for the accurate measurement of the E.M.F. of a cell is

A) Voltmeter
B) Ammeter
C) Potentiometer
D) Whetstone bridge

10. A voltmeter always gives lower value of p.d. because:

A) Some energy is lost in moving the needle
B) Some energy is lost in moving the needle
C) It absorbs some energy
D) Both A and B