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Question 18N.2.HL.TZ0.7a

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.2.HL.TZ0.7a
Level HL Paper 2 Time zone TZ0
Command term Determine Question number a Adapted from N/A
a.
[Maximum mark: 1]
18N.2.HL.TZ0.7a

A small electric motor is used with a 12 mF capacitor and a battery in a school experiment.

When the switch is connected to X, the capacitor is charged using the battery. When the switch is connected to Y, the capacitor fully discharges through the electric motor that raises a small mass.

(a)

The battery has an emf of 7.5 V. Determine the charge that flows through the motor when the mass is raised.

[1]

Markscheme

charge stored on capacitor = 12 × 10−3 × 7.5 = 0.09 «C» ✔

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