Electricity and Magnetism UPSC Questions

Physics

Electricity and Magnetism MCQ Questions


7.
In nature, free charged particles do exist like in upper strata of atmosphere called
A.
Ionosphere
B.
Mesosphere
C.
Troposphere
D.
Exosphere
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ANSWER :
A. Ionosphere
8.
The safety device based on the heating effect of electric current is
A.
Bulb
B.
Fuse
C.
Light
D.
None of the above
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ANSWER :
B. Fuse
9.
When current is switched on in a room heater, _______ is converted into _________
A.
Electric energy, heat energy
B.
Electric energy, Light energy
C.
Heat energy, Light energy
D.
Heat energy, electric energy
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ANSWER :
A. Electric energy, heat energy
10.

Which of the following is correct for the symbol of battery
(i) Longer line in the symbol of an electric cell represents positive terminal
(ii) Shorter line in the symbol of an electric cell represents negative terminal

A.

(i) only

B.

(ii) only

C.

both (i) and (ii)

D.

None of the above

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ANSWER :

C. both (i) and (ii)

11.
An electric charge will experience a force if an ______ is applied
A.
Electric Field
B.
Magnetic Field
C.
Both (a) & (b)
D.
None of the above
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ANSWER :
A. Electric Field
12.

Which of the following is correct while making a battery of two cells
(i) The positive terminal of one battery is connected to the negative terminal of other battery
(ii) The positive terminal of one battery is connected to the positive terminal of another battery

A.

(i) only

B.

(ii) only

C.

All the above

D.

None of the above

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ANSWER :

A. (i) only