A circular ring of radius r made of a nonconducting material is placed with its axis parallel to a uniform electric field. The ring is rotated about a diameter through`180^0`. Does the flux of electric field change? If yes, does it decrease of increase?

A dipole is placed in a uniform electric field with its axis parallel to the field. It experiences

A circular coil of rauis 10cm, 500 turns and resistance 2Omega is placed with its plane perpendicualr to the horizontal component of the earth's magnetic field it is rotated about its vertical diameter through 180^(@) in 0.25 S estimate the magnitude of the emf and current induced in the coil. Horizontal component of earth's magnetic field at the place is 3xx10^(-5)T.

A circular coil of raduis 10cm, 500 turns and resistance 200Omega is placed with its plane perpendicular to the horizontal component of earth's magnetic field. If is rotated about its vertical diameter through 180^(@) in 0.25s. Estimate the magnitudes of the emf and current induced in the coil. (B_(H)=3xx10^(-5)T)

A square frame of edge 10 cm is placed with its positive normal making on angle of 60^0 with a uniform electric field of 20 V m^(-1) . Find the flux of the electric field through the surface bounded by the frame.

A circular coil of radius 2.00 cm has 50 turns. A uniform magnetic field B= 0.200 T exists in the space is a direction parallel to the axis of the loop. The coil is now rotated about a diameter through an angle of 60.0^@ . The operation takes 0.100 s. (a) find the average emf induced in the coil. (b) if the coil is a closed one(with the two ends joined together) and has a resistance of 4.00 Omega . calculate the net charge crossing a cross- section of the wire of the coil.

A thin conducting ring of radius R is given a change +Q . The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is:

A uniform electric field exists in space. Find the flux of this field through a cylindrical surface with the axis parallel to the field.

A Charge Q is distributed uniformly on a ring of radius r. A sphere of equal r is constructed with its centre at the periphery of the ring (figure 30.12) Find the flux of the electric field through the surface of the sphere.