Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electric Charges and Fields

Question:

Which of the following statements are correct?

A. Dipole field depends on the distance r and also on the angle between the position vector $\vec r$ and the dipole moment $\vec p$
B. A comb runs through dry hair acquires charge through friction
C. If surface charge density of a plate is positive, the electric field is directed towards the plate.
D. Electrostatic field lines cannot form closed loops.
E. In a uniform electric field, a dipole experiences a torque and a net force also.

Choose the correct answer from the options given below:

Options:

A, B and D Only

B, C and E Only

C, D and E Only

A, D and E Only

Correct Answer:

A, B and D Only

Explanation:

A. Dipole field depends on the distance r and also on the angle between the position vector $\vec{r}$and the dipole moment $\vec{p}$
B. A comb runs through dry hair acquires charge through friction
C. If surface charge density of a plate is positive, the electric field is directed away from the plate.
D. Electrostatic field lines cannot form closed loops. It starts from positive charge and terminates on negative charge.
E. In a uniform electric field, a dipole experiences a torque and net force is zero.