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First Aid for Electric Shock

Pick out the ...

Question

Pick out the correct situation which may lead to an electric shock.

A

Using wires with insulation

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B

Removing plug pins when the switch is on

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C

Operating a switch with a dry hand

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D

Changing bulb when the switch is off

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Solution

The correct option is B
Removing plug pins when the switch is on

Changing bulb when the switch is off

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Similar questions

Q. In an household electric circuit, which of the following is/are correct?
(A) All electric appliances drawing power are joined in parallel.
(B) A switch may be either in series or in parallel with the appliance which it controls.
(C) If a switch is in parallel with an appliance, it will draw power when the switch is in the 'off' position (open).
(D) If a switch is in parallel with an appliance, the fuse will blow (burn out) when the switch is put 'on' closed.

Q. When the switch was closed in the circuit shown here, the bulbs did not light up.
May be one of the bulbs is fused. How can it be determined which bulb is fused?
figure

(a) Close the switch and notice which bulb does not light up.
(b) Close the switch after removing one bulb at a time until the others light up.
(c) Close the switch and replace the three bulbs with a new one.
(d) There is no way to find out.

Q. Choose the correct statement for a bulb connecting in an electrical circuit.
Statement (i) : The bulb glows only when the switch is in ON condition.
Statement (ii) : The bulb does not glow when the switch is in OFF condition.

(a) A switch is not touched with wet hands while putting it on or off. Give a reason for your answer.

(b) Name the wire to which a switch is connected.

Q. The supply voltage to room is

120 V

. The resistance of the lead wires is

6 Ω

60 W

bulb is already switched on. What is the decrease of voltage across the bulb, when a

240 W

heater is switched on in parallel to the bulb?

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First Aid for Electric Shock

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