WAEC Physics 2022 Objective — Question 30
Question 30 of 50 from the West African Examinations Council (WAEC) Physics 2022 Objective paper, with the correct answer and a full explanation.
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One major reason why electrical appliances in homes are normally earthed is that the A. person touching the appliance is normally safe from electric shock.
- A. appliances are maintained at a higher p.d. than the earthCorrect
- B. appliances are maintained at a lower p.d than the earth
- C. appliances are maintained at the same p.d with that of the earth
Explanation
Earthing electrical appliances provides a safe path for fault current to flow to the ground, protecting the person touching the appliance from electric shock.
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