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Eight wires cut the page perpendicularly...

Eight wires cut the page perpendicularly at the points shown in figure . A wire labeled with the integer k(k=1.2…..80 carries the current ki, where i=2A . For those wires with odd k, the current is out of the page . For those with even k, it is into the page. the value of `ointvecB.dvecs=0` along the closed path indicated and in the direaction shown.

A

`10mu_(0)`

B

`5mu_(0)`

C

`15mu_(0)`

D

`20mu_(0)`

Text Solution

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The correct Answer is:
A
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