Question

An electric current causes:

• A. Heating effect in a conductor
• B. Magnetic field around a conductor
• C. Light production from the conductor
• D. Cooling effect in a conductor

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Heating effect in a conductor

B

Magnetic field around a conductor

C

Light production from the conductor

A flow of current through any conductor causes electron motion giving rise to heating effect. After certain limit, part of this heat energy gets transformed into a light (filament bulb). The flow of small amount of current generates a magnetic field around it. It can be proved with the help of a magnetic needle deflection or bringing a pin close to the conductor.