Question

Magnetic field at point O is
3R
2RE

Answer 1

Answer:

PHYSICS

Evaluate the magnitude and direction of magnetic field at point O :

question

December 26, 2019avatar

Yugal Balla

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ANSWER

Magnetic field due to circular coil

B

C

=

4π

μ

0

i

×2πa×

4

3

B

C

=

8a

3μ

0

i

The direction of the magnetic field is perpendicular to the plane of paper and coming out of the page.

Magnetic field due to two perpendicular long wires of length b

B

1

=B

2

=

4b

μ

0

i

The direction of the both magnetic fields is perpendicular to the plane of paper coming out of the page.

Resultant force due to two perpendicular long wires of length

B=

B

1

2

+B

2

2

B=

2

2

b

μ

0

i

Total magnetic field

B

T

=

8a

3μ

0

i

+

2

2b

μ

0

i

The direction of the resultant magnetic field is perpendicular to the plane of paper coming out of the page.