Simple Electric Circuit NDA Questions

NDA Physics

Simple Electric Circuit MCQ Questions


7.
A resistance having rating 10 ohms, 10 W is likely to be a
A.
Metallic resistor
B.
Carbon resistor
C.
Wire wound resistor
D.
Variable resistor
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ANSWER :
C. Wire wound resistor
8.
The resistance of a few meters of wire conductor in closed electrical circuit is
A.
Practically zero
B.
Low
C.
High
D.
Very High
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ANSWER :
A. Practically zero
9.
A 40 W bulb is connected in series with a room heater. If the 40 W bulb is replaced by 100 W bulb, the heater output will
A.
Decrease
B.
Increase
C.
Remain same
D.
Heater will burn out
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ANSWER :
B. Increase
10.
A glass rod when rubbed with silk cloth is charged because
A.
It takes in protons
B.
Its atoms are removed
C.
It gives away electrons
D.
It gives away positive charge
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ANSWER :
C. It gives away electrons
11.
Bulbs in street lighting are all connected in
A.
Parallel
B.
Series
C.
Series-parallel
D.
End-to-end
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ANSWER :
A. Parallel
12.
Which method can be used for absolute measurement of resistances?
A.
Lorentz method
B.
Raleigh method
C.
Ohm’s law method
D.
Wheatstone bridge method
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ANSWER :
D. Wheatstone bridge method