In the diagram above, a 200 W bulb is lighted by a 240 V a.c mains supply. If 1kWh is sold at N 40, the cost of keeping the bulb lighted for a day is
A.
N 192.00
B.
N 1.92
C.
N 19.20
D.
N 1,920.00.
Answer: A
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