Four charges are placed at the four corners of a square of side 15 cm. The charges on the upper left and right corners are +3 μC and -6 μC respectively. The charges on the lower left and right corners are -2.4 μC and -9 μC respectively. The net electric force on -9 μC charge is: (pixture attached)

18 N, 75⁰ below the positive x-axis

18 N, 75⁰ below the negative x- axis

18 N, 75⁰ above the negative x- axis

18 N, 75⁰ above the positive x- axis

An electron moves 5 m in the direction of an electric field of strength 300 N/C. The change in electrical potential energy is:

2.4 x 10^-16 J

-2.4 x 10^-16 J

2.4 x 10^-19 J

-2.4 x 10^-19 J

A 5 μF capacitor is connected to a 12 V battery. The charge on each plate of the capacitor is:

6 x 10^-5 C
6 x 10⁵ C

6 x 10^-6 C

60 C

A capacitor has a charge of 9 μC when charged by a potential difference of 1.5 V. The capacitance of the capacitor is:

2.5 x 10^-5 F

6.0 x 10^-6 F

6.0 x 10^-5 F

6.0 x 10^-5 F

A capacitor has a capacitance of 3 pF. What potential difference would be required to store a charge of 21 pC?

3 V

21 V

7 V

0.14 V

A capacitor of capacitance 4 μF is connected to a 1.5 V battery. How much electrical potential energy is stored?

9.0 x 10^-6 J

2.7 x 10^-6 J

6.0 x 10^-6 J

4.5 x 10^-6 J

Distinguish between conductors and insulators. Please provide examples in your answer.

How will you charge a metal sphere by the process of induction?

State and explain Coulomb's law.

Define electric potential energy and electric potential at a point in an electric field.

Define capacitance of a capacitor.