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## Homework Statement

A wire loop with radius R is located a distance d from a long straight wire carrying a current I. Find the flux through the loop.

## Homework Equations

B = [itex]\mu[/itex]I/(4[itex]\pi[/itex])

Magnetic Field above wire

[itex]\phi[/itex]=B*da*cos[itex]\vartheta[/itex]

## The Attempt at a Solution

Somehow you have to combine the two equations to find the flux through the circular loop. Any help would be greatly appreciated as I am stumped.