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The magnetic field of an electromagnetic wave is given by – 2 15 7 6 m Wb ) j ˆ i ˆ 2 )( t 10 6 z 10 2 cos( 10 6 . 1 B + × + × × = − → The associated electric field will be -

1. m V ) j ˆ 2 i ˆ )( t 10 6 z 10 2 cos( 10 8 . 4 E 15 7 2 + − × + × × = →
2. m V ) j ˆ i ˆ 2 )( t 10 6 z 10 2 cos( 10 8 . 4 E 15 7 2 + × − × × = →
3. m V ) j ˆ 2 i ˆ )( t 10 6 z 10 2 cos( 10 8 . 4 E 15 7 2 − × + × × = →
4. m V ) i ˆ j ˆ 2 )( t 10 6 z 10 2 cos( 10 8 . 4 E 15 7 2 + − × − × × = → CAREER POINT CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 | www.ecareerpoint.com Email: info@cpil.in Page # 5 JEE Main Online Paper

Correct answer: m V ) j ˆ 2 i ˆ )( t 10 6 z 10 2 cos( 10 8 . 4 E 15 7 2 − × + × × = →

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