A student sets up a series circuit containing a battery, a switch, a lamp and a motor.
The student connects an ammeter at three different points, X, Y and Z, in the circuit, one at a time.
The Table shows the results.
Table
| Position of ammeter | Current in A\text{A}A |
|---|---|
| X, between the battery and the lamp | 0.24 |
| Y, between the lamp and the motor | 0.24 |
| Z, between the motor and the battery | 0.24 |
Describe the pattern shown by the results.
Another student says:
'The lamp uses up some of the current, so the current at Y should be smaller than the current at X.'
Explain why this student is wrong.
Calculate the charge that passes point Y in 2.5 minutes.
The potential difference across the motor is 3.0 V.
Calculate the energy transferred in the motor by the charge in (c).
The potential difference across the lamp is 1.5 V.
Deduce the potential difference across the battery.
94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.