Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

The circuit contains a 12 V battery, three resistors and a switch. Fig. 9.1 shows the circuit diagram.
(a)[1]

State how many 2.0 V cells are connected in series in the battery.

(b(i))[1]

Calculate the combined resistance of the two resistors in series.

(b(ii))[2]

Calculate the total resistance of the circuit.

(c(i))[2]

Calculate the current in the $20\,\Omega$ resistor.

(c(ii))[2]

Calculate the charge passing through the $20\,\Omega$ resistor in 6.0 minutes.

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