Practice Questions of May 7, 2016

1) A parallel plate air capacitor has a capacitance of 5μFarad. It becomes 50μFarad when a dielectric medium occupies the entire space between the plates. Find k.

2) An electric diapole is placed in an uniform electric field with its axis inclined to the field by an angle θ. Write an expression for torque. Show the diagram how the diapole is kept at maximum torque and zero torque.

3) You are provided with 8μFarad capacitor. Show with the help of diagram how will you arrange them to get the resultant capacitance of 4μFarad.

4) A large hollow metallic sphere has a positive of 35μFarad at centre. Find flux.

5)

• Calculate charge on C1.
• Calculate Potential Energy studied by C3.