IB Physics SL B 5 1 Cells Provide a Source of Emf Questions

Practise IB Physics SL B.5.1 by defining a cell’s emf and calculating energy supplied per unit charge.

Exam points

Explain that a cell provides an electromotive force (emf) as energy transferred per unit charge.
Calculate a cell’s emf from energy supplied to a charge, using the magnitude of electron charge.
Identify a cell’s emf from its open-circuit voltmeter reading, rather than its loaded terminal pd.
Infer one cell’s emf from a battery diagram, counting series stages rather than all parallel cells.

[Maximum number: 1]

This question is in two parts. Part 1 is about a thermistor circuit. Part 2 is about vibrations and waves.
Part 1 Thermistor circuit
The circuit shows a negative temperature coefficient (NTC) thermistor X and a $100 \mathrm{k} \Omega$ fixed resistor R connected across a battery.

Figure for Question IB Physics SL B 5 1 Cells Provide a Source of Emf Questions question 1 — IB Physics SL

The battery has an electromotive force (emf) of 12.0 V and negligible internal resistance.

Part 2 Vibrations and waves

The cone and dust cap D of a loudspeaker L vibrates with a frequency of 1.25 kHz with simple harmonic motion (SHM).

Define electromotive force (emf).

All question bank results loaded

IB Physics SL B 5 1 Cells Provide a Source of Emf Questions question 1