Electrostatics — Physics MCQs (Class 12)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#33 The electric field inside a conductor is
A) Zero
B) Constant
C) Proportional to distance
D) Inversely proportional to distance
#34 The electric potential inside a conductor is
A) Zero
B) Constant
C) Proportional to distance
D) Inversely proportional to distance
#35 The charge on a conductor resides
A) Inside the conductor
B) On the surface
C) Both inside and on the surface
D) Neither inside nor on the surface
#36 The electric field at the surface of a conductor is
A) Zero
B) $\frac{\sigma}{\epsilon_{0}}$
C) $\frac{\sigma}{2\epsilon_{0}}$
D) $\frac{2\sigma}{\epsilon_{0}}$
#37 The capacitance of a spherical capacitor is
A) $4\pi\epsilon_{0}\frac{ab}{b-a}$
B) $4\pi\epsilon_{0}\frac{b-a}{ab}$
C) $4\pi\epsilon_{0}(b-a)$
D) $4\pi\epsilon_{0}ab$
#38 The capacitance of an isolated sphere of radius R is
A) $4\pi\epsilon_{0}R$
B) $\frac{4\pi\epsilon_{0}}{R}$
C) $\frac{R}{4\pi\epsilon_{0}}$
D) $\frac{1}{4\pi\epsilon_{0}R}$
#39 The equivalent capacitance of two capacitors in series is
A) $C_{1}+C_{2}$
B) $\frac{C_{1}C_{2}}{C_{1}+C_{2}}$
C) $\frac{C_{1}+C_{2}}{C_{1}C_{2}}$
D) $C_{1}C_{2}$
#40 The equivalent capacitance of two capacitors in parallel is
A) $C_{1}+C_{2}$
B) $\frac{C_{1}C_{2}}{C_{1}+C_{2}}$
C) $\frac{C_{1}+C_{2}}{C_{1}C_{2}}$
D) $C_{1}C_{2}$
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