You are designing a new solenoid and experimenting with material for each turn.

Question

You are designing a new solenoid and experimenting with material for each turn. The particular turn you are working with is a circular loop of radius 4.50 cm that carries a current of 11.0 A. Calculate the magnetic field B at the center of the loop. Consider the coordinate system in the figure. If the circular loop lies in the xy plane and if the current flows clockwise around the loop, which direction does the magnetic field point inside the loop? negative z negative y positive positive x If we decrease the radius the magnetic field will:

Explanation / Answer

B = miuo*I /(2*R)
= (1.2566*10^-6)*(11) / (2*4.5*10^-2)
= 1.4*10^-5 T
Answer: 1.4*10^-5 T

curl fingers of your right hand in the direction of current, then thumb will point along the direction of B
Here B will be along -z axis
Answer: negative z

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