Question

A set up consisting of a bulb, salt solution and a magnetic compass is arranged in such a manner that bulb and salt solution come in between the electric wires connected to the cell and hence complete the circuit, magnetic compass is wrapped with the connecting wires. When switched on, current flows through salt solution, the bulb glows and the needle deflects. Which of the following effects of current is observed?

• A. Heating effect of current
• B. Chemical effect of current
• C. Magnetic effect of current
• D. All of these

Answer 1

The correct option is D

All of these

As, switched on, the current flows through the wires, salt solution and bulb. The bulb glows due to the heating effect; it produces chemical effect when it flows through salt solution and the magnetic compass needle deflects due to the magnetic field due to the magnetic effect of current.