Question

If two identical heaters each rated as (1000 W, 220 V) are connected in parallel to 220 V, then the total power consumed is

• A. 200 W
• B. 2500 W
• C. 250 W
• D. 2000 W

Answer 1

Answer: (D)

When a single heater (resistance $R_1=R$ ) s connected to 220V, then it will consume a power $P_1=1000$ W, if two such identical heaters are connected in parallel (total resistance $R_2=R_1/2=R/2$ ) to same source, then it will consume power $P_2$ $\frac{P_2}{P_1}=\frac{R_1}{R_2}$ $P_2=2P_1=2000W$