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. The magnetic compass is wrapped with the connecting wires. When switched on, current flows through the salt solution, the bulb glows and the needle deflects. Which of the following effects of current is responsible for this?

Heating effect of current

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Magnetic effect of current

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Chemical effect of current

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All of these

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Solution

The correct option is D
All of these

When switched on, current flows through the circuit. The bulb glows due to the heating effect; it produces a chemical effect when it flows through the salt solution and the magnetic compass needle will be deflected due to the magnetic field around the conductor.

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Similar questions

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?

The deflection of the needle of a compass when it is placed near a current carrying wire is an example of magnetic effect of electric current.

Q. Question 4

When the electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

(a) the chemical effect of current.
(b) the heating effect of current.
(c) the magnetic effect of current.
(d) the lightning effect of current.

Which effect of electric current is utilised for detecting the flow of current through a solution :
(a) when a torch bulb is used ?
(b) when a compass is used ?

Q. The effect of current causes deflection in a compass needle when it is placed near a current-carrying wire.

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The correct option is D All of these When switched on, current flows through the circuit. The bulb glows due to the heating effect; it produces a chemical effect when it flows through the salt solution and the magnetic compass needle will be deflected due to the magnetic field around the conductor.