An A.C generator of 220 V having internal resistance r =10 Ω and external resistance R =100 Ω . What is the power developed in the external circuit?

Question

An A.C generator of 220 V having internal resistance r =10 Ω and external resistance R =100 Ω . What is the power developed in the external circuit? (A) 484 W (B) 400 W (C) 441 W (D) 369 W

Tardigrade Admin · Accepted Answer

V =200 V ; r =10 Ω R=10+100=110 Ω I=(V/R)=(220/110)=2 A P = I 2 R =4 × 100=400 W

Q. An $A . C$ generator of $220 V$ having internal resistance $r = 10Ω$ and external resistance $R = 100Ω.$ What is the power developed in the external circuit?

$484 W$

$400 W$

$441 W$

$369 W$

$V = 200 V; r = 10Ω$
$R = 10 + 100 = 110Ω$
$I = \frac{V}{R} = \frac{220}{110} = 2 A$
$P = I^{2} R = 4 \times 100 = 400 W$

Q. An A.C generator of 220V having internal resistance r=10Ω and external resistance R=100Ω. What is the power developed in the external circuit?

484W

400W

441W

369W