Magnetic field due to currentMedium
Question
Current i = 2.5 A flows along the circle x2 + y2 = 9 cm2(here x & y in cm) as shown. Magnetic field point (0, 0, 4 cm) is


Options
A.(36π × 10-7T) 
B.(36π × 10-7T) - 
C.
D.
Solution
Magnetic file on the axis of a circular loop
B =
= 10-7 ×
= (36π × 10-7T)
B =
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