Earth as a Magnet, Static and Current Electricity NDA Questions

NDA Physics

Earth as a Magnet, Static and Current Electricity MCQ Questions


1.
Which of the following statements about electric current is correct?
A.
Current flows from high potential to low potential
B.
Current flows from low potential to high potential
C.
Current flows from negative to positive.
D.
Current flows from positive to negative.
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ANSWER :
A. Current flows from high potential to low potential
2.
An electric circuit with multiple paths for the flow of current is called a
A.
Series circuit
B.
Parallel circuit
C.
Combination circuit
D.
Complex circuit
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ANSWER :
B. Parallel circuit
3.
What is the voltage across a resistor with a current of 2A and resistance of 5 ohms?
A.
10 V
B.
2.5 V
C.
7 V
D.
3 V
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ANSWER :
A. 10 V
4.
Which of the following is used to step up or step down voltage in an electric circuit?
A.
Transformer
B.
Capacitor
C.
Inductor
D.
Diode
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ANSWER :
A. Transformer
5.
What is the function of a fuse in an electric circuit?
A.
To control the flow of current
B.
To increase the voltage
C.
To store electrical energy
D.
To protect against overcurrent
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ANSWER :
D. To protect against overcurrent
6.
The SI unit of electrical energy is
A.
Watt-hour
B.
Volt-ampere
C.
Ampere-hour
D.
Joule
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ANSWER :
A. Watt-hour