Question

Consider the two current-carrying wires shown in the figure. The current in wire 1 is 3.7...

Consider the two current-carrying wires shown in the figure. The current in wire 1 is 3.7 A; the current in wire 2 is adjusted to make the net magnetic field at point A equal to zero.

Consider the two current-carrying wires shown in t

Is the magnitude of the current in wire 2 greater than, less than, or the same as that in wire 1?

Explain in 1 or more sentences.

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Answer #1

The magnetic field becomes zero at point A if the direction of current flow in the wire 2 should be towards right. The direction ofmagnetic field due to wire 1 is into the page and the magnetic field due to wire 2 will be out ofpage The net magnetic field at point A is, T. 1 T. 11 cm 22 cm 3.7 A = 1.85 AThe point A is near the wire 2 which is half of the distance between wire 1 and point A so, the current flow in the wire 2 sh

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