Question

an electric bulb is heated 220 v and 110v calculate the current and the resistance ​

Answer 1

Answer:

R = 220^2/100 Ω = 484 Ω. This is the resistance of the bulb. When V = 110 V, power consumed = V^2/R = 110^2/484 = 25 W.

Explanation:

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Answer 2

Answer:

Explanation:

According to Ohm's law, V = IR. That is, R = V/I.

Here, V = 220 V and I = 5 A.

Therefore, R = 220/5 = 44 ohms.

Hence, the resistance of the heater is 44 ohms.