A 100 W electric light bulb is connected to a 250 V supply. Determine (a) the current flowing in the bulb, and (b) the resistance of the bulb.
Question
Solution 1
(a) The current flowing in the bulb can be calculated using Ohm's Law, which states that the current (I) is equal to the power (P) divided by the voltage (V). In this case, P = 100 W and V = 250 V.
So, I = P / V = 100 W / 250 V = 0.4 A.
Therefore, the current flowing in the bulb is 0.4 Amperes.
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