Electrostatics & Capacitors · JEE Main previous year questions

2002 5 questions

1. Q1122002 · 27 Apr 2002 · Shift 1

   On moving a charge of $20$ coulomb by $2\mathrm{cm}$, $2\mathrm{J}$ of work is done, then the potential difference between the points is

   1. A.$0.1\mathrm{V}$
   2. B.$8\mathrm{V}$
   3. C.$2\mathrm{V}$
   4. D.$0.5\mathrm{V}$.
   Show answer

   Answer: A

2. Q1132002 · 27 Apr 2002 · Shift 1

   If there are $n$ capacitors in parallel connected to $V$ volt source, then the energy stored is equal to

   1. A.$CV$
   2. B.$\frac{1}{2}nC{V}^2$
   3. C.$C{V}^2$
   4. D.$\frac{1}{2n}C{V}^2$
   Show answer

   Answer: B

3. Q1142002 · 27 Apr 2002 · Shift 1
   
   1. A.$q/4\pi {ϵ}_{0}L$
   2. B.zero
   3. C.$q/2\pi {ϵ}_{0}L$
   4. D.$q/3\pi {ϵ}_{0}L$
   Show answer

   Answer: B

4. Q1152002 · 27 Apr 2002 · Shift 1

   If a charge $q$ is placed at the center of the line joining two equal charges $Q$ such that the system is in equilibrium then the value of $q$ is

   1. A.$Q/2$
   2. B.$-Q/2$
   3. C.$Q/4$
   4. D.$-Q/4$
   Show answer

   Answer: D

5. Q1162002 · 27 Apr 2002 · Shift 1

   Capacitance (in $\mathrm{F}$) of a spherical conductor with radius $1\mathrm{m}$ is

   1. A.$1.1\times 10^{-10}$
   2. B.$10^{-6}$
   3. C.$9\times 10^{-9}$
   4. D.$10^{-3}$
   Show answer

   Answer: A