1
1 mark
1 markA cell of e.m.f. 1.5 V is connected to a 5.0 Ω resistor. The terminal potential difference across the cell is 1.0 V.
Which of the following is the current in the circuit?
0.1 A
0.2 A
0.3 A
0.5 A
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E.M.F & Modelling Resistance
11 mark
1 markA cell is connected across a resistor. After a while the internal resistance of the cell increases.
Which row of the table correctly shows the change in the current in the circuit and the change in the terminal potential difference across the cell?
| Current | Terminal potential difference | |
| A | decreases | decreases |
| B | decreases | increases |
| C | increases | decreases |
| D | increases | increases |
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21 mark
1 markThe diagram shows a graph of current 
against potential difference V for an electrical component.
Which of the following components would produce a graph of this shape?
filament bulb
metallic conductor
negative temperature coefficient thermistor
ohmic conductor
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