Edexcel IGCSE Physics 2.10 Resistance & current
Practise predicting how current changes when resistance changes, using circuit diagrams and the qualitative meaning of V = IR.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- explain why adding resistors in series increases total resistance and reduces current
- predict the current change when an LDR or resistor has a lower resistance
2.10 Resistance and current question 1
The circuit diagram shows a light dependent resistor (LDR) and a resistor connected in series with a 1.5 V cell.
The graph shows how the resistance of the LDR changes with light intensity.
The resistance of the LDR decreases.
State the effect on the current in the circuit.
All question bank results loaded