Q1 A system of two equal and opposite charges (+q and -q) separated by a small distance 'd', has a dipole moment 'p' equal to

- `\frac{q}{d}`
- `\frac{2q}{d}`
- 2qd
- None of these

- 2qd

Q2 The direction of electric dipole moment is

- from +q and -q
- from -q and +q
- perpendicular to the line joining -q to +q
- away from +q

Q3 .The unit of Electric dipole moment is

- Cm
- `Cm^{-1}`
- `Cm^{-2}`
- `NCm^{-2}`

- Cm

Q4 When an electric dipole is placed in a uniform external electric field parallel to the field, it will experience

- a torque but no force
- a force but no torque
- a torque as well as force
- neither a force nor a torque

- a torque but no force

Q5 The direction of electric field due to an electric dipole at a point on its axial line is

- Same as that of electric dipole moment
- Zero
- different to that of electric dipole moment
- None of the above

- Same as that of electric dipole moment

Q6 The direction of electric field due to an electric dipole at a point on its equatorial line is

- Same as that of electric dipole moment
- Zero
- opposite to that of electric dipole moment
- None of the above

- opposite to that of electric dipole moment

Q7 work done in moving a charge along equatorial line is ?

- Maximum
- minimum
- Zero
- None of these

- Zero
- Reason: The Electric Potential is every where zero on the equtorial line of a dipole.

Q8 Dipole Moment Vector Quantity.

- true
- false

**true**

Q9 A system of two equal and opposite charges separated by a certain distance is called

- Electric field
- Electric dipole
- Electric dipole moment
- Electric flux

- Electric dipole

Q10 Dipole length is a .

- Scalar quantity
- Vector quantity

**Vector quantity**

## No comments:

## Post a Comment