NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

1 Hard

1 of 1

Application +4 | -1

Two long parallel wires carry currents

i_1

and

i_2

such that

i_1>i_2.

When the currents are in the same direction, the magnetic field at a point midway between the wires is

6 \times 10^{-6} \mathrm{~T}.

If the direction of

i_2

is reversed, the field becomes

3 \times 10^{-5} \mathrm{~T}.

The ratio

\frac{i_1}{i_2}

View answer and explanation

Correct option: D

\frac{3}{2}

Option D (

\frac{3}{2}

) is correct because the magnetic field is proportional to the current and the direction of the current affects the sign of the field.

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