Task 00016.

When you turn on the external circuit, the potential difference at the poles of the battery becomes 9 V and the current in the circuit is 1.5 A. What is the internal resistance of the battery r and the resistance of the circuit R? The electromotive force of the battery is 15V.
Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
If you have any questions about the decision, write. I will try to help. File in image format.