An iduced current of 2.5 m flows throug a single conductor of resistance `100Omega.` Find out the rate at which the magnetic flux is cut by the conductor.

When a current of 5 A flows through a conductor of resistance 3Omega the loss of power due to joule heating effect is _______

A current of 2.5 A flows through a coil of inductance 5 H The magnetic flux linked with the coil is

In the circuit given below a current of 0.8 A flows through the external resistance when R= 10 Omega and 0.4A when R = 25. Omega . Calculate the internal resistance and e.m.f. of the battery.

An inductor coil of resistance 10 Omega and inductance 120 mH is connected across a battery of emf 6 V and internal resistance 2 Omega . Find the charge which flows through the inductor in (a) 10 ms, (b) 20ms and (c ) 100ms after the connections are made.

A current carrying wire produces a magnetic field in its surrounding space A. The S.I. unit of magnetic flux density is a. henry b. tesla c. Am^(2) d. A-m B. With the help of a diagram, derive an expression for the magnetic field at the point on the axis of a circular current loop. C. Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1 A. What is the magnitude of the magnetic field at the centre of the coil?

A straight horizontal conducting rod of length 0.45 m and mass 60 g is suspended by two vertical wires at its ends. A current of 5.0 A is set up in the rod through the wires. a. What magnetic field should be set up normal to the conductor in order that the tension in the wires is zero? b. What will be the total tension in the wires if the direction of current is reversed keeping the magnetic field same as before? (Ignore the mass of the wires.) g = 9.8 ms^2 ?

A rectangular coil of 100 turns has length 5 cm and width 4 cm. it is placed with its plane parallel to a uniform magnetic field and a current of 2 A is sent through the coil. Find the magnitude of the magnetic field B, if the torque acting on the coil is 0.2 Nm^(-1).