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JAMB Physics 1989 Question 40

Question 40

Electrical Energy and Power

The function of a 5-A fuse included in a circuit supplying a household refrigerator with power is to keep the

  1. A.temperature of the refrigerator low and constant
  2. B.current supplied to the refrigerator below 5A
  3. C.voltage supply constant
  4. D.current supplies to the refrigerator constant and above 5A.
Show the answer and explanation

Answer: B (current supplied to the refrigerator below 5A)

Explanation

The fuse melts and breaks the circuit if the current goes above 5 A, protecting the fridge and wiring.