In the circuit shown, the cell has an emf of 12 V and an internal resistance which is not negligible.
When the resistance of the variable resistor is 10 Ω the voltmeter reads 10 V and the ammeter reads 1.0 A.
The resistance of the variable resistor is changed to 5 Ω.
What is the new reading on the ammeter?

1 )
1.4 A
1.7 A
3 )
2.0 A
4 )
2.4 A
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