Data: U (voltage at the ends of the taken conductor) = 5 V; t (duration of the current work) = 40 s; A (value of perfect work) = 800 J.
The strength of the current in the conductor can be determined from the formula for calculating the work of the electric current: A = U * I * t, whence I = A / (U * t).
Let’s make the calculation: I = 800 / (5 * 40) = 4 A.
Answer: The current in the conductor is 4 A.
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