Question

Two wires are running horizontally. The top wire is a distance d above the bottom wire. Both wires have current I but are running in opposite directions. The top wire creates a magnetic field B at the position of the bottom wire. This magnetic field creates a force F on the bottom wire. You will answering questions about the magnetic field at the position of the bottom wire and the force on the bottom wire caused by this field.

If the top wired is moved to a distance d/2 away from the bottom wire, how do the magnitude and direction of the magnetic field change? Explain.

If the top wired is moved to a distance d/2 away from the bottom wire, how do the magnitude and direction of the magnetic force on the bottom wire change? Explain.

If the current in the bottom wire has the same value but now flows in the opposite direction, how do the magnitude and direction of the magnetic field change? Explain.

If the current in the bottom wire has the same value but now flows in the opposite direction, how do the magnitude and direction of the magnetic force change? Explain.

Answer 1

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