Electrostatics> electric-dipole...

An electric dipole, consisting of two opposite charges of 2 × 10^-6 C each separated by a distance 3 cm is placed in an electric field of 2 × 10⁵ N/C. Torque acting on the dipole is

(a) 12 × 10^-1N - m

(b) 12 × 10^-2N - m

(c) 12 × 10^-3N - m

(d) 12 × 10^-4N - m

Simran Bhatia , 12 Years ago

Grade 11

4 Answers

Amit Saxena

(c)

Charges (q) = 2 × 10^-6C, Distance (d)

= 3 cm = 3 × 10^-2 m and electric field (E)

= 2 × 10⁵ N/C. Torque (t) = q.d.

E = (2 × 10^-6) × (3 × 10^-2) × (2 × 10⁵)

= 12 × 10^-3N-m.

Last Activity: 12 Years ago

Ajeet Tiwari

Hii Simran
The correcet answer is (c)
Charges (q) = 2 × 10^-6 C,
Distance (d)= 3 cm = 3 × 10^-2 m and
electric field (E)= 2 × 10^5 N/C.
Torque (t) = q.d.
E = (2 × 10^-6) × (3 × 10^-2) × (2 × 10^5)
= 12 × 10^-3N-m.
Thanks

Last Activity: 5 Years ago

Yash Chourasiya

Dear Student

Given,
Charges (q) = 2 × 10^-6 C
Distance (d)= 3 cm = 3 × 10^-2 m
and electric field (E)= 2 × 10⁵ N/C.
We know that
Torque (t) = q.d. E
= (2 × 10^-6) × (3 × 10^-2) × (2 × 10⁵)
= 12 × 10^-3N-m.

I hope this answer will help you.
Thanks & Regards
Yash Chourasiya

Last Activity: 5 Years ago