A circular conductor of radius `5cm` produces a magnetic field of `7times10^(-6)T` at its centre. The current flowing through the conductor is: ?

A tightly wound 90 turn coil of radius 15 cm has a magnetic field of 4 xx 10^(-4)T at its centre. The current flowing through it is

When a current flows through a conductor its temperature

A current - carrying circular coil of 100 turns and radius 5.0 cm produces a magnetic field of (6.0 xx 10 ^-5) T at its centre. Find the value of the current.

At the centre of a current - carrying circular coil of radius 5 cm, magnetic field due to earth is 0.5xx10^(-5)"Wb m"^(-2) . The current flowing through the coil, so that it equals the Earth's magnetic field, is

A circular segment of radius 20cm subtends an angle of 60^@ at its centre. Figure A current of 10A is flowing through it. Find the magnitude and direction of the magnetic field produced at the centre.

The maximum force acting on a straight conductor of length 15 cm, placed in a magnetic field of induction 5 xx 10^(-5) N//A m is 3 xx 10^(-4) N then the current flowing in conductor is

A charge of magnitude q flows through the conductor in time 't' . The current through the conductor is

A circular coil carrying a certain, current produces a magnetic field B_(0) at its centre. The coil is now rewound so a to have 3 turns and the same currents is passed through it. The new magnetic field at the centre is

A current carrying circular loop of radius 10 cm, has a magnetic induction of 3.6 xx 10^(-5)T at its center. What is the magnetic dilpoe moment of the loop?