What voltage is a 3.6 W bulb designed for if a current of 0.3A flows through it?
| March 25, 2021 | education
Given:
I = 0.3 A – current flowing in the light bulb;
W = 3.6 W – light bulb power;
It is required to find U – the voltage for which the light bulb is designed.
We find the voltage by the formula:
U = W / I = 3.6 / 0.3 = 12V.
Answer: The light bulb is designed for a voltage of 12 volts.
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