- #1
Helly123
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Homework Statement
There is lead XY shaped as straight wire. Next to it, circular lead with radius 0.10 m.
They are in the same plane.
XY to center of circle, O is 0.20 m.
Curent flowing through XY is 15.7 A
Homework Equations
The Attempt at a Solution
1) find magnetic field (B) at O[/B]
B induced by XY at O ##u_0##I/2##\pi##r
B induced by Circle at O ##u_0##I/2R
So i just add both?
Since B induced at O by XY is opposed direction, the current at Circular wire is opposed direction to current XY?
2) flux at O
flux = BA cos ##\theta##
So A is 1? Because it just a point at O?
While, B equal to B at number 1) ?
3) when B at O set to 0 by a current passing in circular lead. Find magnitude and direction of this current
B at O is zero
This current does it refer to current at circular wire?
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