Define Ampere from two current carrying parallel wires.

Magnetic field at 10 cm from extremely long current carrying straight wire is 10^(-5)Wb//m^(2) . Then current passing through this wire is ______ .

As we move away from a current -carrying straight wire , the magnetic field of wire varies as……..(Where, r is the distance between a given point and the wire ).

Show arrangement of iron ore sprinkled around current carrying wire.

A compass needle is placed near a current - carrying straight wire . State your observation when the current in the wire is increased . Give reason .

There are two current carrying planar coils made each from identical wires of length L. C_1 is circular (radius R) and C_2 is square (side a). They are so constructed that they have same frequency of oscillation when they are placed in the same uniform B and carry the same current. Find a in terms of R.

On what factor does the direction of the magnetic field produced by a current - carrying straight wire depend ?

Explain experiment which produced magnetic field due to straight long current carrying wire.

A current carrying loop acts like a ......

Assertion: Electric field inside a current carrying wire is zero. Reason: Net charge on the current carrying wire is non zero.

Magnetic dipole moment of current carrying circular coil is ...... length of wire of coil.