Determine the current in the conductor if the EMF is 4V, R = 8 Om, r = 0.4 Om.

univerkov | February 27, 2021 | education

Initial data: Еі (value of electromotive force (EMF) in the conductor) = 4 V; R (external resistance) = 8 ohms; r (internal resistance) = 0.4 ohm.

The current strength in the conductor can be expressed from the following formula: Еі = I * (R + r), whence I = Еі / (R + r).

Let’s perform the calculation: I = 4 / (8 + 0.4) = 4 / 8.4 ≈ 0.48 A.

Answer: The current in the conductor is 0.48 A.

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