... A circuit consists of a lightbulb connected to two conducting rails and a co
ID: 2054627 • Letter: #
Question
... A circuit consists of a lightbulb connected to two conducting rails and a conducting movable bar, as shown in the figure below. An external magnetic field is directed perpendicular to the plane of the circuit. During which of the following actions will the bulb light up? (Select all that apply.)The magnitude of the magnetic field increases with time.
The magnitude of the magnetic field decreases with time.
The bar is moved to the right.
The bar is moved to the left.
The magnetic field remains constant in time.
Explanation / Answer
This question has to do with magnetic flux. In each case there is a magnetic flux except the last one.
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