P and Q are two circular thin coils of same radius and subjected to the same rate of change of flux. If coil P is made up of copper and Q is made up of iron, Then the wrong statement is-

Two wires have the same length, same radius but one of them is made of copper and the other is made of iron. Which Will have more resistance?

A circular coil of radius r carries I. If the same coil is now changed into a square loop carrying the same current, magnitude of its magnetic moment will

Two circular coils are made of two identical wires of the same length. If the number of turns in the two coils are 4 and 2, then the ratio of magnetic inductions at the centre will be

A steady current is flowing in a circular coil of radius R, made up of a thin conducting wire. The magnetic field at the centre of the loop is B_L . Now, a circular loop of radius R//n is made from the same wire without changing its length, by unfounding and refolding the loop, and the same current is passed through it. If new magnetic field at the centre of the coil is B_C , then the ratio B_L//B_C is

A steady current is flowing in a circular coil of radius R, made up of a thin conducting wire. The magnetic field at the centre of the loop is B_L . Now, a circular loop of radius R//n is made from the same wire without changing its length, by unfounding and refolding the loop, and the same current is passed through it. If new magnetic field at the centre of the coil is B_C , then the ratio B_L//B_C is

A steady current is flowing in a circular coil of radius R, made up of a thin conducting wire. The magnetic field at the centre of the loop is B_L . Now, a circular loop of radius R//n is made from the same wire without changing its length, by unfounding and refolding the loop, and the same current is passed through it. If new magnetic field at the centre of the coil is B_C , then the ratio B_L//B_C is

Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potentail difference applied across them so that the magnetic field at their centres is the same?

Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potentail difference applied across them so that the magnetic field at their centres is the same?

Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potentail difference applied across them so that the magnetic field at their centres is the same?