**These questions are from IIT JEE main / AIEEE exam:**

**[AIEEE was the earlier name of IIT JEE main exam]**

**Questions (Q1) to (Q10) are given below in this page itself. **

**Q1) [JEE main/AIEEE 2002] **

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

(a) 0.1 V b) 8 V

c) 2 V d) 0.5 V

** **

**Q2) [JEE main/AIEEE 2009] **

Two points P and Q are maintained at the potentials of 10 V and - 4 V, respectively. The work done in moving 100 electrons from P to Q is

(a) 9.60x10^{-17} J

(b) -2.24 x10^{-16} J

(c) 2.24 x10^{-16} J

(d) -9.60x10^{-17} J

**Q3) [JEE main/AIEEE 2009] **

This question contains statement-1 and statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.

**Statement1- **For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q.

**Statement 2-** The net work done by a conservation force on an object moving along a closed loop is zero.

(a) Statement 1 is true, statement 2 is true; statement 2 is the correct explanation of statement 1.

(b) Statement 1 is true, statement 2 is true, statement 2 is not correct explanation of statement 1

(c) Statement 1 is false, statement 2 is true.

(d) Statement 1 is true, statement 2 is false.

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**Q4) [JEE main/AIEEE 2002]**

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

(a) CV b) ½ nCV^{2}

c) CV^{2} d) CV^{2}

** **

**Q5) [JEE main/AIEEE 2002] **Capacitance of a spherical conductor with radius 1 m is

(a) 1.1 x 10^{-10} b) 10^{-6}

c) 9x10^{-9 } d) 10^{-3}

** **

**Q6) [JEE main/AIEEE 2003] **

A sheet of aluminum foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

(a) Decreases

b) remains unchanged

c) becomes infinite

d) increases

** **

--------------------------------

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**Q7) [JEE main/AIEEE 2003] **

The work done in placing a charge of 8x10^{-18} coulomb on a condenser of capacity 100 micro-farad is

(a) 16x10^{-32} joule

(b) 3.1x10^{-26} joule

(c) 4x10^{-10} joule

(d) 32 x10^{-32} joule

**Q8) [JEE main/AIEEE 2005] **

A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is ‘C’ then the resultant capacitance is

(a) (n+1) C b) (n-1) C

c) nC d) C

**Q9) [JEE main 2013] **

Two capacitors C_{1} and C_{2} are charged to 120 V and 200 V respectively. It is found that connecting them together the potential on each one can be made zero. Then

a) 5C_{1 }= 3C_{2}

b) 3C_{1}=5C_{2}

c) 3C_{1}+5C_{2}=0

d) 9C_{1}=4C_{2}

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**Q10) [JEE main/AIEEE 2003] **

If the electric flux entering and leaving an enclosed surface respectively is φ_{1} and φ_{2, }the electric charge inside the surface will be

a) (φ_{2}-φ_{1}) ε_{0}_{ }

b) (φ_{1}-φ_{2})/ε_{0}

c) (φ_{2}-φ_{1})/ε_{0}

d) (φ_{1}+φ_{2}) ε_{0}