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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:
A
$B_z=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x-1.8 \times 10^{11} t\right]$
B
$B_z=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x+1.8 \times 10^{11} t\right]$
C
$B_y=69 \sin \left[0.6 \times 10^3 x+1.8 \times 10^{11} t\right]$
D
$B_y=2.3 \times 10^{-7} \sin \left[0.6 \times 10^3 x-1.8 \times 10^{11} t\right]$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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JEE Main
Physics
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