In the figure shown below, find the torque due to the force of 5 N, about point O and A.
A wire ABCDEF (with each side of length L) bent as shown in Fig. and carrying a current I is placed in a uniform magnetic field B parallel to the positive y - direction. What is the magnitude and direction of the force experienced by the wire?
A plane e.m. wave of frequency 30 MHz travels in free space along the x-direction. The electric field component of the wave at a particular point of space and time is E=6 Vm−1 along y-direction. Its magnetic field component B at this point would be
In a certain region of space, electric field is along the z-direction throughout. The magnitude of electric field is, however, not constant but increases uniformly along the positive z-direction, at the rate of 105 NC−1 per metre. What are the force and torque experienced by a system having a total dipole moment equal to 10−7 Cm in the negative z-direction?