A Battery Is Causing a Large Current in a Solenoid

question 37

Multiple Choice

A battery is causing a large current in a solenoid (helical coil of wire) . A bar magnet is held at rest nearby, aligned with the axis of the solenoid, with its south pole closest to the solenoid. The bar magnet is being repelled by the solenoid. Which of the following statements is true of the conventional current in the solenoid?

• A) The current in the solenoid increases.
• B) The current in the solenoid decreases.
• C) The current in the solenoid is flowing counterclockwise as seen from the bar magnet.
• D) The current in the solenoid is flowing clockwise as seen from the bar magnet.
• E) The direction of the current in the solenoid alternates with a constant frequency.

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