Determine the work of the current in an electric lamp for 20 s at a voltage of 12V at a current strength of 3.5.
| January 7, 2021 | education
Initial data: t (duration of the lamp) = 20 s; U (effective voltage across the electric lamp) = 12 V; I (lamp current) = 3.5 A.
The sought-after work of the current in the lamp can be calculated using the formula: A = U * I * t.
Let’s perform the calculation: A = 12 * 3.5 * 20 = 840 J.
Answer: According to the calculation, the work of the current in an electric lamp is 840 J.
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