A coninuos wire with a current 3.5A has a kinick/loop with a radius of 4cm in it

Question

A coninuos wire with a current 3.5A has a kinick/loop with a radius of 4cm in it before the wire continues on straight. A) Which magnetic field is directed into the page at the center of the knick/loop?

a. The long striaght wire's magnetic page.

b. The loop's magnetic field

c. both the loop's and the wire's magneic fields.

d. Niether the loop's nor the wire's magnetic field is into the page.

Part B. Calculate the magnitude of the net magnetic field at the center of the loop. By net magnetic field it is meant that you should include all sources of magnetiic field at that point coming from the wire.

Explanation / Answer

Niether the loop's nor the wire's magnetic field is into the page.

part B

for infinte wire;B = µ I /2?R

for loop ; B = µ I /2R

Total :  µ I /2R*(1+ 1 /?).........(out of the plane)

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