Q8.2
Q8.4
Q8.5
1. Wind a coil and put a current through it. This makes an electromagnet that can deflect a compass or pick up a car.
2. Shake a magnet near a coil and watch the induced voltage appear in the coil.
3. Put a high frequency ac current through a coil and use a radio to detect the resulting electromagnetic wave.
Q8.8
Recall that the electron beam in the CRT curved in a direction perpendicular to the magnetic field in our classroom demo. Also recall the force on a current carrying wire is perpendicular to the magnetic field.
P8.1
P8.2
P8.5
C8.5
The earth's magnetic field is present. Waving the coil around changes the magnetic flux through the coil, inducing a voltage.