The electrical circuit consists of a current source with an EMF of 6 V, an internal resistance
| February 7, 2021 | education
The electrical circuit consists of a current source with an EMF of 6 V, an internal resistance of 2 ohms and a resistor. If the current strength of the circuit is 2 A, then the resistance of the resistor is?
Let’s apply Ohm’s law to the complete circuit.
I = E / (R + r), where E is the EMF of the circuit, R is the external resistance of the circuit, r is the internal resistance of the power source.
R + r = E / I.
R = (E / I) – r = (6/2) – 2 = 3 – 2 = 1 ohm.
Answer: The resistance of the resistor is 1 ohm.
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