In the circuit below the battery has an emf of 24 V and an unknown internal resistance Voltmeter, V. is connected across the battery. The resistance of the ammeter may be ignored. When switch S is closed, voltmeter V₂ reads 4 V and voltmeter V₁ reads 20 V A₁ R V₁ 24 V
1.calculate the reading on ammeter A1
