Question

Calculate the total power of 2 fans if each of them draws a current of 5A at potential difference of 200V.
A. 2000W
B. 1000V
C. 250W
D. 2W

Answer 1

Hints: We can calculate the power of each fan by multiplying the potential difference and current flowing through the fans.

Formula used: We use the formula $P = V \times I$ where, P is the electric power, V is the potential difference and I is the current.

Complete step by step answer:
As we discussed the formula above P=V x I in the question it is given that every fan draws a current of 5A and every fan is connected across a potential difference of 200V. If we need to find the total power of 2 fans then, first we should find the power of a single fan. By using the formula first fan power is ${P_1} = 200 \times 5 = 1000$ Watt where, Watt is the unit of power, second fan power is ${P_2} = 200 \times 5 = 1000$ Watt.
Therefore, total fan power of 2 fans in the circuit,
$\therefore P = {P_1} + {P_2} = 1000 + 1000 = 2000$

Hence, we got the total power of the circuit of 2 fans of 2000 Watt.

Note: If question would have asked that find the total power of ‘N’ number of fans and each fan draws the same current connected to same potential difference then P total=NP, P is the power of the single fan and if we multiply P to N(number of fans) then total power will be calculated.