A conducting loop is connected to a sensitive ammeter and moved through a magnetic field. The loop and ammeter form a complete circuit unless a lead is disconnected.
| Stage | Motion of loop | Ammeter reading |
|---|---|---|
| 1 | Moving into the field | Deflection to the right |
| 2 | Held stationary in the field | Zero |
| 3 | Moving out of the field | Deflection to the left |
Explain the pattern of ammeter readings. Predict what the ammeter would read if a lead were disconnected while the loop was moving out of the field.
92 exam-style questions on Edexcel GCSE Physics 13.1 Inducing a current, covering 13.1.1 Producing an electric current by induction, 13.1.2 Factors affecting the induced potential difference, 13.1.3 Alternators and dynamos, and 13.1.4 Microphones and loudspeakers. Each one has a worked solution and a mark scheme showing where the marks go.