CLASS 12 PHY CH-2

PHYSICS CH-2

1. Work done in complete revolution of charge around another charge is:

Non-zero
Depends on path
Zero (equipotential surface)
Infinite

2. Electric dipole potential varies as:

1/r
1/r²
1/r³
Constant

3. Dipole in non-uniform electric field experiences:

Only torque
Only force
Force and torque
Neither

4. Capacitor disconnected after inserting dielectric, constant quantity:

Potential
Capacitance
Charge
Energy

5. Equipotential surfaces:

Can intersect
Touch sometimes
Never intersect
Parallel always

6. Electric field inside conductor is:

Maximum
Zero
Half
Depends

7. Battery connected, distance doubled, energy:

Doubles
Quadruples
Halves
Same

8. Dipole energy minimum at angle:

0°
90°
180°
45°

9. Polarization produces:

Free charges
Bound charges
No charges
Current

10. 3 capacitors in series (C each):

3C
C
C/3
C/9

11. Work done = 2μC from 20V to 50V:

60 μJ
30 μJ
100 μJ
40 μJ

12. Force between capacitor plates ∝ :

Q
Q²
1/Q
1/Q²

13. Potential inside conductor sphere:

Zero
Same as surface
Half
Infinite

14. Thin metal plate in capacitor:

Capacitance doubles
Nearly same
Zero
Infinite

15. Parallel capacitors have same:

Charge
Voltage
Energy
Capacitance