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PHYSICS

JAMB 2010 - Question 38

Physics 2010 JAMB Past Questions - Question 38: In the diagram above , a 200 W bulb is lighted by a 240 V a.c mains supply . If 1KWh is sold at 40naira , the cost of keeping the bulb lighted for a day is

Use the diagram to answer question that follows

In the diagram above , a 200 W bulb is lighted by a 240 V a.c mains supply . If 1KWh is sold at 40naira , the cost of keeping the bulb lighted for a day is

A: 192.00 naira

B: 1.92 naira

C: 19.20 naira

D: 1,920,00 naira

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Correct Answer

Explanation

Cost =Pt/1000 x cost per unit = 200 x 24/1000 x 40