(Solved): In the following circuit diagram the internal resistance of the battery and the resistance of the ...

In the following circuit diagram the internal resistance of the battery and the resistance of the conductors can be neglected. The emf of the battery is \( 12 \mathrm{~V} \). The battery in the circuit diagram below has an emf of \( 12 \mathrm{~V} \) and internal resistance is negligible. Resistor \( R \) has an unknown resistance. The reading of the ammeter is \( 2 \mathrm{~A} \) when the switch \( S \) is OPEN. 2.2.2 Reading on the voltmeter. Switch \( S \) in now CLOSED. 2.3 How does this change affect the: 2.3.1 Reading on the ammeter? Choose from INCREASES, DECREASES or REMAINS THE SAME. Explain the answer. 2.3.2 Reading on the voltmeter? Choose from INCREASES, DECREASES or REMAINS THE SAME. Explain the answer.