What is the magnetic field at the midpoint of a wire carrying current I in oppos

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Question: What is the magnetic field at the midpoint of a wire carrying current I in opposite directions?

Options:

Correct Answer: Zero

Solution:

At the midpoint, the magnetic fields due to the two currents cancel each other out, resulting in zero net magnetic field.

What is the magnetic field at the midpoint of a wire carrying current I in opposite directions?

What is the magnetic field at the midpoint of a wire carrying current I in opposite directions?

Step 1: Understand that we have a wire carrying current I in two opposite directions.
Step 2: Identify the midpoint of the wire where we want to find the magnetic field.
Step 3: Recall that a current-carrying wire produces a magnetic field around it.
Step 4: Note that the direction of the magnetic field depends on the direction of the current.
Step 5: At the midpoint, one current produces a magnetic field in one direction, while the other current produces a magnetic field in the opposite direction.
Step 6: Since these two magnetic fields are equal in strength but opposite in direction, they cancel each other out.
Step 7: Conclude that the net magnetic field at the midpoint is zero.

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