The fractional change in the magnetic | EMF

JEE MAIN 2021

26.08.21_S1

Question

The fractional change in the magnetic field intensity at a distance ' $r$ ' from centre on the axis of current carrying coil of radius ' $a$ ' to the magnetic field intensity at the centre of the same coil is : (Take $r

Select the correct option:

$\frac{3}{2} \frac{a^2}{r^2}$

$\frac{2}{3} \frac{a^2}{r^2}$

$\frac{2}{3} \frac{r^2}{a^2}$

$\frac{3}{2} \frac{r^2}{a^2}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Medium

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