Question

an electric bulb is mentioned with 220v and 40w calculate flow of electric charge and resistance of bulb ​

Answer 1

Answer:

$p = vi \\ \\ 40 = 220i \\ \\ i = \frac{1}{11} \\ \\ v = ir \\ \\ 220 = \frac{1}{11} \times r \\ \\ r = 2420$