Physics
WAEC 2022
One major reason why electrical appliances in homes are normally earthed is that the-----------
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A.
person touching the appliance is safe from electric shock
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B.
appliances are maintained at a higher p.d. than the earth
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C.
appliances are maintained at a lower p.d. than the earth
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D.
appliances are maintained at the same p.d. with that of the earth
Correct Answer: Option A
Explanation
Earthing of an electrical appliance meant the outer metallic case of appliance is connected with earth, wire which is welded to the end of a copper rod and it is burned in the ground. It save the appliance during short-circuiting by passing Excessive current to earth.
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