Basic Concept of Electricity MCQs

The magnetic field intensity (in Aim) at the centre of a circular coil of diameter 1 m and carrying a current of 2 A is

The field at any point on the axis of a current carrying coil will be

Consider the following statements: The force per unit length between two stationary parallel wires carrying (steady) currents I. is inversely proportional to the separation of wires. 2. is proportional to the magnitude of each current. 3. satisfies Newton's third law. Of these statements

Permeability is reciprocal of

In all cases of electromagnetic induction, an induced voltage will cause a current to flow in a closed circuit in such a direction that the magnetic field which is caused by that current will oppose the change that produces the current, is the original statement of

The laws of electromagnetic induction (Faraday's and Lenz's laws) are summarized in the following equation :di

Which law is synonymous to the occurrence of diamagnetism?

When a single turn coil rotates in a uniform magnetic field, at uniform speed the induced emf will be

Principle of dynamically induced emf is used in a