Question

Asked Sep 23, 2019

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Two long, parallel transmission lines, 4.0 cm apart, carry

1.0-A and 3.0-A currents. Find all locations where the net magnetic field

of the two wires is zero if these currents are in (a) the same direction

and (b) the opposite direction.

Step 1

Figure shows the two long parallel transmission lines 4 cm apart carrying i_{1} and i_{2} currents. Let x be the distance from i_{1 }conductor.

Step 2

Here, µ_{o} is the permeability of free space, i is current and r is distance from the conductor to imagined point. Magnetic field (B) due to a straight wire, is given by

Step 3

Part(a)

Let at distance x from a 1 A wire, the net magnetic field is zero if currents in the ...

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