Question

(b)List three characteristic features of the electric current used in
our homes
(c)What is a fuse? Why is it called a safety device?
(d)Why is it necessary to earth metallic electric appliances​

Answer 1

Explanation:

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Answer 2

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b)List three characteristic features of the electric current used in our homes?

➜ Properties of Electric Current

• Electric current flowing in an electrical material can perform or induce an effort or energy, namely.
• The electrical energy is converted into other energy.
• There are two types of electric current, the direct current (direct current) and alternating current (alternating current).

c)What is a fuse? Why is it called a safety device?

➜A fuse is a safety device which is damaged when large amount of electricity pass through it and it does not damage any other component when electricity reach the fuse wire the fuse wire is very thin so if amount of electricity reach it burnt and and save the other component of house.

An electrical fuse is a safety device and it works on the heating effect of current.The fuse for protecting our domestic wiring is fitted just above our main switch on the switchboard.It is connected in series in series in the electric circuits.

(d)Why is it necessary to earth metallic electric appliances?

➜ The metallic body of electric appliances is connected to the earth by means of earth wire so that any leakage of electric current is transferred to the ground. This prevents any electric shock to the user.