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Question 19M.1.HL.TZ1.37

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.HL.TZ1.37
Level HL Paper 1 Time zone TZ1
Command term Question number 37 Adapted from N/A
37.
[Maximum mark: 1]
19M.1.HL.TZ1.37

The circuit diagram shows a capacitor that is charged by the battery after the switch is connected to terminal X. The cell has emf V and internal resistance r. After the switch is connected to terminal Y the capacitor discharges through the resistor of resistance R.

What is the nature of the current and magnitude of the initial current in the resistor after the switch is connected to terminal Y?

[1]

Markscheme

C

Examiners report

The most common (incorrect) answer was response D, suggesting that candidates were uncertain of initial current magnitude while understanding that current would decrease upon discharge.

Syllabus sections