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(a) Three resistors of resistance 2.0#Omega#, 4.0#Omega# and 6.0#Omega# are connected together in a circuit. Draw a circuit diagram to show the arrangement of the resistor which gives (i) Effective resistance of 3.0#Omega#
(ii) Minimum resistance.
(b) In figure 11, the voltmeter reads 2.1 V when the switch is open. When the switch is closed, the voltmeter reads 1.8 V and the ammeter reads 0.1A. Determine:
(i) The e.m.f of the cell
(ii) The internal resistance of the cell
(iii) The resistance of the lamp.
