An electric dipole is placed at an angle of 30° with an electric field intensity of 2 × 105 N/C. It experiences a torque equal of 4 Nm. The charge on the dipole, if the dipole length is 2 cm, is?

Step 2: Now we have to Calculate the charge on the dipole:

An electric dipole in a consistent electric field feels a torque () determined by

τ = pEsinθ

Where,

p = dipole moment

= q x l

Torque is:

τ = qlE sinθ

q = τ/lE sinθ

Substituting the values,

q = 4Nm/ (2 x 10-2 m x 2 × 105 N/C x sin 30°)

On simplifying we get

q = 4/ (4 x 103 x ½)

q = 2 x 10-3 C

q = 2 mC

A pair of opposing charges, q and -q, separated by a distance, d, is referred to as an electric dipole. Electric dipoles in space always point in the direction of positive charge q from negative charge -q. The dipole’s center is defined as the intersection of q and -q. A pair of electric charges with two opposite signs and equal magnitudes spaced apart is the simplest type of electric dipole.

Summary:

An electric dipole is placed at an angle of 30° with an electric field intensity of 2 × 105 N/C. It experiences a torque equal of 4 Nm. The charge on the dipole, if the dipole length is 2 cm, is?

An electric dipole is placed at an angle of 30° with an electric field intensity of 2 × 105 N/C. It experiences a torque equal of 4 Nm. The charge on the dipole, if the dipole length is 2 cm, is 2 mC.