Question

Magnetic field at point 'O' due to given current distribution. If 5A current is flowing in
this system and the diameter of the loop is 10cm
(1) 2 x10 ST,
(2) 10T, O
(3) 101,
(4) 2 x 10"T, O
D​

Answer 1

Explanation:

Circular part will be equal and in opposite to each other. So, they will cancel each other.

So, magnetic field at 0 will be due to two straight wires only.

The magnetic field will be equal and in same direction due to each straight wire.

Field due to one straight wire =B1=4πRμ0I

BNet=2B1=2πRμ0I

BNet=2π×0.14π×10−7×5=0.110×10−7×10

BNet=10−5Tesla⊙outward

Answer 2

ANSWER-

4. 2×10"T,0

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