A student wants to increase the magnetic field strength around a straight conductor carrying current. Which combination of changes will most effectively achieve this?

Question

A student wants to increase the magnetic field strength around a straight conductor carrying current. Which combination of changes will most effectively achieve this? — Exam MCQ

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B. Increasing the current and bringing the observation point closer to the conductor. — The correct choice is Increasing the current and bringing the observation point closer to the conductor.. The result follows from the relevant magnetic-field, electromagnetic-induction or Fleming/right-hand-rule principle.

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A. Increasing the current while moving the observation point farther away.

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C. Keeping the current constant and changing the observation point to any location.

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D. Decreasing the current and moving the observation point farther from the conductor.

A student wants to increase the magnetic field strength around a straight conductor carrying current. Which combination of changes will most effectively achieve this?

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