Earth as a Magnet, Static and Current Electricity NDA Questions

NDA Physics

Earth as a Magnet, Static and Current Electricity MCQ Questions


13.
What happens to the resistance of a conductor when its temperature increases?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
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ANSWER :
A. Increases
14.
Which law describes the relationship between voltage, current, and resistance in an electric circuit?
A.
Kirchhoff's Law
B.
Ohm's Law
C.
Faraday's Law
D.
Coulomb's Law
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ANSWER :
B. Ohm's Law
15.
What is the direction of flow of electrons in an electric circuit?
A.
From positive to negative
B.
From negative to positive
C.
From high potential to low potential
D.
From low potential to high potential
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ANSWER :
B. From negative to positive
16.
Which of the following is a conductor of electricity?
A.
Rubber
B.
Plastic
C.
Copper
D.
Wood
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ANSWER :
C. Copper
17.
What is the SI unit of electric charge?
A.
Ampere
B.
Volt
C.
Coulomb
D.
Ohm
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ANSWER :
C. Coulomb
18.
When two materials are rubbed against each other and electrons are transferred from one to the other, it results in
A.
Electric current
B.
Magnetism
C.
Static electricity
D.
Chemical reaction
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ANSWER :
C. Static electricity