Questions on EMF and internal resistance

Q8. In the circuit shown below, the battery, of emf 6.0V, has negligible internal resistance.

(a) Calculate the current through the ammeter when the switch S is

(i) open,

(ii) closed


(b) The switch S is now replaced with a voltmeter of infinite resistance. Determine the reading on the voltmeter.


(Total 5 marks)