Ohm's Law NDA Questions

NDA Physics

Ohm's Law MCQ Questions


1.
Ohm's Law is a ___ law?
A.
Chemical law
B.
Physical law
C.
Mathematical law
D.
Both b and c
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ANSWER :
D. Both b and c
2.
Ohm's law is applicable to which of the following?
A.
Semiconductors
B.
Vacuum tubes
C.
Carbon resistors
D.
None of these
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ANSWER :
D. None of these
3.
Ohm's law is represented using which graph?
A.
VI
B.
IR
C.
VR
D.
VRI
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ANSWER :
A. VI
4.

As per Ohm's law, V (potential difference) is equal to

A.

I(current)×R(resistance)

B.

R(resistance)×I(current)²

C.

R(resistance)/I(current)

D.

I(current) + R(resistance)

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ANSWER :

A. I(current)×R(resistance)

5.
Which of the following materials is expected to have the least resistivity?
A.
Copper
B.
Lead
C.
Mercury
D.
Zinc
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ANSWER :
A. Copper
6.
The property of a substance which offers opposition to the flow of current through it is called
A.
Energy
B.
Capacity
C.
Resistance
D.
Voltage
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ANSWER :
C. Resistance