CBSE Class 12 Physics 2023 Delhi Set 3 Paper

Question : 1

Total: 14

SECTION - A

Two horizontal thin long parallel wires, separated by a distance r carry current I each in the opposite directions. The net magnetic field at a point midway between them, will be

zero
(‌
µ0I
2πr
) vertically downward
(‌
2µ0I
r
) vertically upward
(‌
µ0I
πr
) vertically downward

Solution: 👈: Video Solution

Magnetic field due to both the wires is
‌

µ0I

4π(‌

)

=‌

µ0I

2πr

So, total field is 2×‌

µ0

2π

‌

=‌

µ0

‌

The direction will be vertically downward.

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