IB Physics SL B.5.3 Resistance Question Bank

Practise IB Physics SL B.5.3 by applying resistance as V/I to conductors, variable resistors and ideal circuit meters.

Exam points

Calculate resistance from potential difference and current, including variable-resistor circuit readings.
Use resistance, resistivity and conductor structure to distinguish conducting and insulating materials.

[Maximum number: 3]

(a)

Part 2 Electric current and resistance
The graph below shows how the current I in a tungsten filament lamp varies with potential difference V across the lamp.

[ 3 ]

(i)

Define the electrical resistance of a component.

[ 1 ]

(ii)

Calculate the resistance of the filament lamp when the potential difference across it is 2.8 V .

[ 2 ]

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B.5.3—Resistance question 1

Question (a)

Question (i)

Question (ii)