Exam-style question
Try this first
A flux-time graph shows a linear increase in magnetic flux over time. What does this indicate about the induced emf in the circuit?.
Model answer
What a good answer should say
- The induced emf is constant and equal to the rate of change of magnetic flux.
- Since the graph is linear, the slope represents a steady increase in flux, resulting in a consistent emf.
Explanation
Why this works
The evidence shows that a linear increase in magnetic flux indicates a constant rate of change. This implies that the induced emf remains steady over the time interval.
Therefore, the conclusion is that the emf induced in the circuit is directly proportional to the slope of the flux-time graph.
Common mistake
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