ElectrostaticsHard
Question
An electric dipole consists of two opposite charges each of magnitude 1.0 μC, separated by a distance of 2.0 cm. The dipole is placed in an external electric field of 1.0 × 105 N/C. The maximum torque on the dipole is :
Options
A.0.2 × 10-3 N-m
B.1.0 × 10-3 N-m
C.2.0 × 10-3 N-m
D.4.0 × 105 N-m
Solution
τmax = pE sin 90o = 10-6 × 2 × 10-2 × 1 × 105 N − m = 2 × 10-3 N-m
Create a free account to view solution
View Solution FreeMore Electrostatics Questions
Two point charges of same magnitude and opposite sign are fixed at points A and B. A third small point charge is to be b...Figure represents a square carrying charges +q, +q, -q, -q at its four corners as shown. Then the potential will be zero...Density of electric field lines at a point i.e. no. of lines per unit area shows magnitude of electric field at that poi...An electrical mass me, initially at rest, moves through a certain diatnce in a uniform electric field in time t1. A prot...X and Y are large, parallel conducting plates closed to each other. Each face has an area A. X is given a charge Q. Y is...