CAPE Physics Unit 2 · 2008 (T&T) · Paper 2 · Question 1(b)(iii)

A coil with 16 turns is wound on top of a solenoid with cross-sectional area of 50 cm^2. An a.c. current through the solenoid produces a peak magnetic field of 7.5 mT changing at a frequency of 500 Hz.

Show on Figure 2 (b) the c.r.o. trace expected if the number of turns wrapped around the solenoid was increased to 32, and on Figure 2 (c) show the effect of changing the frequency of the supply to the solenoid to 1000 Hz while all other factors remain constant.

This question uses a figure or table from the paper — you'll see it when you practise.