Question 1:
Name two safety measures commonly used in electric circuits and appliances.
Answer:
Two safety measures commonly used in electric circuits and appliances are as
follows:
(i) Each circuit must be connected with an electric fuse. This prevents the flow
of excessive current through the circuit. When the current passing through the
wire exceeds the maximum limit of the fuse element, the fuse melts to stop
the flow of current through that circuit, hence protecting the appliances
connected to the circuit.
(ii) Earthing is a must to prevent electric shocks. Any leakage of current in an
electric appliance is transferred to the ground and people using the appliance
do not get the shock.
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