Magnetic effect of electric current important topics

The electric current drawn from cell is

Name the following. The branch of physics that deals with the magnetic effect of electric current

Assertion : An alternating current does not show any magnetic effect. Reason : Alternating current does not vary with time.

In photoelectric effect, the photoelectric current is independent of

Name the scientists who discovered the generation of electric current by means of magnetic field.

Choose the correct representation of effect of sewage discharge on important characteristics of a river.

In which method electric current is created for capturing fishes?

A large metal sheet carries an electric current along its surface. Current per unit length is lambda . Magnetic field near the metal sheet is.

What are the magnetic lines of force? Give their important properties.

The rigid conducting thin wire frame carries an electric current I and this frame is inside a uniform magnetic field vec B as shown in Fig. 1.146. Then,