Question

how does torque affect the dipole in electric field

Answer 1

Q. how does torque affect the dipole in electric field

Ans. Torque tends to align the dipole in an electric field.

Torque

Torque is a measure of the force that can cause an object to rotate about an axis.

Torque is a vector quantity. The direction of the torque vector depends on the direction of the force on the axis.

dipole:

when two electric charges with an equal magnitude but opposite charge seperated by a distance "d" known as an electric dipole.

                                    -q                        +q

More Question:

(a)What is rotational motion?

(b)Give two examples of rotational motion

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Answer 2

Due to torque dipole attains stable equillibrium  position .

Explanation

Dipole moment is a vector quantity and is directed from negative charge to positive charge along the axis it is denoted as p and is defined as the product of the magnitude of either of the charge and dipole length.

The SI unit is coulomb -meter or debey

Water ,chloroform,ammonia , h cl,co molecules are some example of permanent electric dipole.

when dipole is placed in an electric field . the net force experienced by the dipole is zero ,

the net torque experienced by the dipole is

τ =pE sinΦ

hence due to torque so produced ,dipole aligns itself in the direction of electric field this is the position of stable equillibrium of dipole.