9702/12 Physics Oct Nov 2023 Online Test | Cambridge AS & A Level Grade MCQ
Chapter 8: Electric current
Chapter 9: Kirchhoff’s laws
Chapter 10: Resistance and resistivity
Chapter 11: Practical circuits
Chapter 12: Waves
Chapter 13: Superposition of waves
Chapter 14: Stationary waves
Chapter 15: Atomic structure
A cell of electromotive force (e.m.f.) $3.0V$ and internal resistance $0.50\Omega$ is connected to a variable resistor, a voltmeter and an ammeter, as shown. The resistance of the variable resistor is varied.
The reading on the ammeter $I$ and the reading on the voltmeter $V$ are recorded.
Which graph shows how $V$ varies with$I$?