IB Physics HL B 5 3 Resistance Questions

Practise IB Physics HL B.5.3 by calculating resistance from V–I data, resistivity, component behaviour and ideal-meter circuits.

Exam points

Define and calculate resistance with R=V/I from circuit readings or a V–I graph, and compare components at the same current or operating point.
Interpret non-ohmic V–I behaviour and determine the resistance of lamps, diodes or variable-resistance components at the stated operating condition.
Calculate resistance from resistivity and conductor dimensions using R=ρL/A, and use charge-carrier evidence to distinguish conducting and insulating materials.
Apply ideal ammeter and voltmeter assumptions, circuit changes and measured p.d./current values to infer resistance and meter readings.

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Study B.5.3—Resistance conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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The plates in (c) are replaced by a cell that has an emf of 12.0 V and internal resistance $5.00 \Omega$ . A resistor of resistance R is connected in series with the cell. The energy transferred by the cell to an electron as it moves through the resistor is $1.44 \times 10^{-18} \mathrm{~J}$ .

Define resistance of a resistor.

ratio potential difference/voltage (across resistor) to current (in resistor) / $\frac{V}{I}$
with symbols defined;

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IB Physics HL B 5 3 Resistance Questions question 1