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Answer :
Final answer:
To calculate the current through the lamp when it is lit, we use Ohm's Law and the power and voltage of the lamp. The current is approximately 0.923 Amperes.
Explanation:
To calculate the current through the lamp when it is lit, we can use Ohm's Law which states that current (I) equals voltage (V) divided by resistance (R). Since the lamp is connected to a 120-volt source, we need to determine the resistance of the lamp. The power (P) of the lamp is given as 156 watts. Using the formula P = IV, we can rearrange it to find the resistance (R = V^2/P). Plugging in the values, we get R = 120^2/156. Now, we can use Ohm's Law again to find the current (I = V/R). Plugging in the values, we get I = 120/((120^2/156)). Therefore, the current through the lamp when it is lit is approximately 0.923 Amperes.
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