The bulb is at full brightness when the potential difference across the bulb is12 V.The current through the bulb is then 3 A.Calculate the power of the bulb when it is at full brightness and give the uni
Question
The bulb is at full brightness when the potential difference across the bulb is12 V.The current through the bulb is then 3 A.Calculate the power of the bulb when it is at full brightness and give the uni
Solution
The power P of an electrical device (in this case, a bulb) can be calculated using the formula:
P = V * I
where: V is the potential difference across the device (in volts, V) I is the current through the device (in amperes, A)
Given: V = 12 V I = 3 A
Substituting these values into the formula gives:
P = 12 V * 3 A = 36 W
So, the power of the bulb when it is at full brightness is 36 watts (W).
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