Question

If we keep two similar loops made up of copper and constantan in a magnetic field for same amount of time, in which loop the induced e.m.f will be greater.

Answer 1

Definition of Magnetic field

1. It is a vector field that is used to describe the magnetic field's influence on moving charges, currents, and mainly in magnetic materials also.
2. The induced current is a type of current generated across a wire due to the continuous changing of the magnetic field.
3. For example, the current produced in a generator is used in rotating a coil of wire in a magnetic field.
4. So we can say that the Induced current will be higher compared to the constantan in copper because it contains smaller resistance as compared to that of the constantan loop.
5. According to Ohm's law resistance inside a conductor is equal to the ratio between the potential difference across the conductor and the current passing through the conductor.

Hence, higher e.m.f would be induced in the copper loop as copper has high electrical conductivity.