Current Electricity

A:Current density is a very is a vector quantity . R : Electric current , passing through a given unit area is current density.

(A) : A galvanometer can be used as an ammeter and Voltmeter. (R) : A galvanometer cannot be used in electric circuit to detect the direction of electric current.

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

Electricity, Electric Current, Unit, Direction (Part-1)

Define electric current. What is its SI unit?

Name the instrument used to measure the current in an electric circuit.

Name the instrument used to control current in an electric circuit.

Differentiate between : Nerve impulse and Electric current.

Two parallel wires are carrying electric currents of equal magnitude and in the same direction. They

A magnet whose magnetic property is due to the flow of an electric current through it