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 `10^5 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 ?

A square loop of side 12 cm with its sides parallel to X and Y axes is moved with a velocity of 8 cm s^-1 in the positive x-direction in an environment containing a magnetic field in the positive z-direction. The field is neither uniform in space nor constant in time. It has a gradient of 10^-3T cm^-1 along the negative x-direction (that is it increases by 10^-3T cm^-1 as one moves in the negative x-direction), and it is decreasing in time at the rate of 10^-3T cm^-1 . Determine the direction and magnitude of the induced current in the loop if its resistance is 4.50 mOmega .

A plane e.m. wave of frequency 40mHz travels in space along the x-direction.At some point, at some instant, the electric field vecE has its maximum value of 750NC^-1 in y-direction. What is the period of the wave?

An electric dipole has the magnitude of its chawrge q and its dipole moment is p. It is placed in a uniform electric field. If the dipole moment is along the direction of the field, what is the force on its and its potential energy?

A plane e.m. wave of frequency 40mHz travels in space along the x-direction.At some point, at some instant, the electric field vecE has its maximum value of 750NC^-1 in y-direction. What is the value of magnitude and direction of magnetic field ?

A plane e.m. wave of frequency 40MHz travels in space along the x-direction.At some point, at some instant, the electric field vecE has its maximum value of 750NC^-1 in y-direction. What is the angular frequency of the em wave?

A plane electromagnetic wave travels in vacuum along z-direction. What can you sayabout the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?

A uniform magnetic field of 3000 G is established along the positive z-direction. A rectangular loop of sides 10 cm and 5 cm carries a current of 12 A. What is the torque on the loop shown in Fig. 4.28? What is the force ? is case corresponds to stable equilibrium? :

A uniform magnetic field of 3000 G is established along the positive z-direction. A rectangular loop of sides 10 cm and 5 cm carries a current of 12 A. What is the torque on the loop shown in Fig. 4.28? What is the force ? is case corresponds to stable equilibrium? :