The electric field in a... | JEE Main 2026

JEE MAIN 2026

21-01-2026 S1

Question

The electric field in a plane electromagnetic wave is given by : $$ E_y=69 \sin \left[0.6 \times 10^3 x-1.8 \times 10^{11} t\right] \mathrm{V} / \mathrm{m} . $$ The expression for magnetic field associated with this electromagnetic wave is $\_\_\_\_$ T.

Select the correct option:

$B_z=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x-1.8 \times 10^{11} t\right]$

$B_z=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x+1.8 \times 10^{11} t\right]$

$B_y=69 \sin \left[0.6 \times 10^3 x+1.8 \times 10^{11} t\right]$

$B_y=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x-1.8 \times 10^{11} t\right]$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution