A secondary cell having an emf of 7V and an internal resistance of 2.5 is connected in series with a primary cell having an emf of 4V and an internal resistance of 45 the negative terminal of each cell being connected to the positive terminal of the other cell. A voltmeter having a resistance of 75 is connected to measure the terminal voltage of the cells. Calculate the voltmeter reading and the current in each cell.

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.