Capacitance (The Combination of Capacitors in Series and Parallel...) NEET Questions

Physics - Electrostatics

Capacitance (The Combination of Capacitors in Series and Parallel...) MCQ Questions


7.
Dielectric strength of air is approximately:
A.
3 × 10⁶ V/m
B.
3 × 10³ V/m
C.
3 × 10¹² V/m
D.
3 × 10⁹ V/m
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ANSWER :
A. 3 × 10⁶ V/m
8.
1 microfarad (μF) equals:
A.
10⁻¹² F
B.
10⁻⁹ F
C.
10⁻⁶ F
D.
10⁻³ F
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ANSWER :
C. 10⁻⁶ F
9.
If the charge on a capacitor is doubled, its capacitance:
A.
Halves
B.
Doubles
C.
Remains the same
D.
Becomes four times
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ANSWER :
C. Remains the same
10.
A capacitor with large capacitance can:
A.
Hold large charge at a relatively small potential difference
B.
Hold small charge at high voltage
C.
Increase the voltage of a battery
D.
Generate electric current continuously
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ANSWER :
A. Hold large charge at a relatively small potential difference
11.
The capacitance of a parallel plate capacitor with vacuum between plates of area A separated by distance d is:
A.
C = ε₀d/A
B.
C = d/(ε₀A)
C.
C = ε₀A/d
D.
C = A/(ε₀d)
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ANSWER :
C. C = ε₀A/d
12.
The electric field between two plates of a parallel plate capacitor (with charge densities +σ and -σ) is:
A.
E = σ/(2ε₀)
B.
E = 2σ/ε₀
C.
E = σ/ε₀
D.
E = σε₀
😑 View Answer Rough Work Error
ANSWER :
C. E = σ/ε₀