Question

The rating of a fuse connected in the general household lighting circuit is:
A. 15A
B. 5A
C. 10A
D. Zero

Answer 1

Hint: The household of the general electric wiring for electric light, electric fan circuit has a thin fuse of low current rating.

Complete step by step solution:
The electric fuse is a use for electric safety devices due to the electric fuse we operate to provide the over electric current protection of an electrical circuit.
The essential component for the electric fuse is metal wire or the strips. It melts sometime, when the flow of the electric current is too much in the electric fuse. The electric fuse consists of a low resistance metal for using the circuit to close.
The electric fuse is a device which is used to protect more expensive electric components from the damaging effects of the flow of the over electric current.
The working of an electric fuse breaks the circuit if there is a fault in a device because of the high flow of the electric current. It helps to prevent the wiring as well as devices from the damage if there is a problem or something going wrong. If the flow of electric current is too high then the wire is heated till melt and then it breaks the circuit.
The fuse rating is calculated by this, expressions
$ Power(P){\text{ }} = \;Electric\;Potential\;(V){\text{ }} \times \;Electric\,Current\;(I)$
  $ \Rightarrow Electric\;Current(I) = \;\dfrac{{Power(P)}}{{Electric{\text{ }}Potential(V)}} \\
$
The current rating of an electric fuse is expressed in Amperes that represents the electric current and the electric fuse without opening.
The rating of a fuse connected in the general household lighting circuit is 5 Ampere

So, the correct answer is “Option B”.

Note: 1. For appliances up to 700 Watts, the electric fuse rating is 3 Ampere
2. For appliances between 700 Watts to 3000Watts, the electric fuse rating is 13Ampere
3. For appliances between more than 13KiloWatts, the electric fuse rating is 45Ampere