A coil of area `0.15 m^2` and 100 turns is placed perpendicular to a magnetic field, The field changes from `5 xx 10^-3 Wbm^-2` to `2 xx 10^-3 Wbm^-2` in a time interval of 30 millisecond. Find the induced emf in the coil.

A coil of 100 turns and of diameter 0.2 m is placed at right angles to a uniform magnetic field. If the field increases uniformly from 0.1Wb . m^(-2) to 0.3Wb.m^(-2) in 0.05s, find out the emf induced in the coil.

A circular conducting coil of radius a and resistance R is placed with its plane perpendicular to a magnetic field. The magnetic field varies with time according to the equation B=B_(0)sinomegat . Obtain the expression for the induced current in the coil.

A coil with an average diameter of 0.04 m is placed perpendicular to a magnetic field of 4000T. If induced emf is 22V when the magnetic field is changed to 2000T in 2s. What is the number of turns in the coil?

A rectangular coil of area 50 xx 10^-4m^2 has 100 turns. A magnetic field 10^-2 wb//m^2 (uniform) is applied perpendicular to the plane of the coil. The field is withdrawn in 40 ms. Find the e.m.f. inducedin the coil.

A rectangular coil of area 20cm times 15cm and of 485 turns is rotating with a speed pf 1800 rpm in a magnetic field of intensity 20Wb .m^-2 .When the coil is inclined at 60^@ with the magnetic field , what will be the induced emf in the coil?

The magnetic flux across a coil, of 50 turns and of diameter 0.1 m, changes from 3xx10^(-4)Wb" to "10^(-4)Wb in 0.02 s. The emf induced in the coil is

A magnet is being brought near a circular coil, of radius 10 cm, having 10 turns and of resistance 10Omega , along its axis. Due to this, if the magnetic flux density linked with the coil increases from 0.1 Wb. m^(-2) to 0.5 Wb.m^(-2)" in "(1)/(10)s , find out the current induced in the coil.

A coil has a number of turns n and area A. It is placed at an angle 60^@ with the direction of magnetic field . If B is change in magnetic field with time then what will be induced e.m.f in the coil?

A circular coil of radius 0.01 m has 100 turns and a current 7A. It is suspended freely in a magnetic field 0.2 T. Which position of it will be be in unstable equilibrium? Find potential energy of the coil in both the cases.

A circular coil of radius 10 cm, 500 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^(@) in 0.25 s. The induced emf in the coil is (take H_(E)=3.0xx10^(-5)T )