Electromagnetic effects

Fig. 9.1 illustrates a permanent magnet resting on a sheet of paper.

Oct/Nov 2020

A loudspeaker has a coil of wire secured to a cardboard tube. That tube is fixed to a cardboard cone. Fig. 8.1 shows part of the loudspeaker arrangement.

Oct/Nov 2021

A beam of beta $(\beta)$ particles enters a magnetic field and then an electric field. Which numbers indicate the beam’s routes through the fields?

Oct/Nov 2023

Fig. 6.1 gives the circuit symbol for a relay, with two labelled terminals, and Fig. 6.2 presents two circuits connected through a relay. The heater transfers energy at a rate of 40 W when it is connected to a 12 V supply.

Oct/Nov 2024

A beta-particle ($\beta$-particle) moves to the right with constant speed. Which field causes the particle to be deflected upwards on the page?

Oct/Nov 2025