List of top Physics Questions on Electromagnetism asked in AP EAPCET

A metal sheet is placed in a magnetic field whose magnitude changes from zero to maximum. The direction of eddy currents produced in the plate is shown in the figure. Then the direction of magnetic field is:

A circular coil of radius 8 cm, 400 turns and resistance \( 2\,\Omega \) is placed with its plane perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through \( 180^{\circ} \) in 0.30 sec. Horizontal component of the earth's magnetic field at the place is \( 3\times10^{-5} \) T. The magnitude of current induced in the coil is approximately:

A 2 m long solenoid with diameter 2 cm and 2000 turns has a secondary coil of 1000 turns wound closely near its midpoint. The mutual inductance between the two coils is

The self-inductance of a solenoid of length $l$, area of cross-section $A$ and number of turns $N$ is proportional to

In a plane electromagnetic wave, \(U_E\) and \(U_B\) are average energy densities of electric field and magnetic field respectively, then

An observer at rest experiences an electric field due to a static charge. Later he starts moving away from it. Then the observer experiences

The distribution of some charges on two Gaussian surfaces \(A\) and \(B\) are as shown in the figure. If \(\phi_A\) and \(\phi_B\) are electric fluxes linked with the surfaces \(A\) and \(B\) respectively, then \[ \frac{\phi_A}{\phi_B}= \]

A solenoid has the length \(1\ \text{m}\) and the area of cross section \(0.02\ \text{m}^2\). If the number of turns in the solenoid is \(5000\), then the self inductance of the solenoid is

The equation that represents magnetic field of a plane electromagnetic wave which is propagating along \(x\)-direction with wavelength \(10\,\text{mm}\) and maximum electric field \(60\,\text{V m}^{-1}\) in \(y\)-direction is \((c=\text{speed of light})\):

A long solenoid having \(100\) turns per cm carries a current of \(\dfrac{4}{\pi}\,\text{A}\). At the centre of it is placed a coil of \(200\) turns of cross-sectional area \(25\,\text{cm}^2\) having its axis parallel to the field produced by the solenoid. When the direction of the current in the solenoid is reversed within \(0.04\,\text{s}\), the induced emf in the coil is: