In the diagram below, three identical lamps each of 100 W are connected in parallel
PHYSICS
WAEC 1993
In the diagram below, three identical lamps each of 100 W are connected in parallel across a potential difference of 250 V. Calculate the reading of the ammeter.
- A. 7.5A
- B. 2.5A
- C. 1.2A
- D. 0.8A
Correct Answer: C. 1.2A
Explanation
P = VI ; I = P/V = 100/250 = 0.4A eachTotal current 3 x 0.4 = 1.2A
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