Electromag wave


How did that red circled operator work?

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It’s called the curl vector. It’s not in jee syllabus per se but you can look up the notation in determinant form on the internet. It’s fairly straightforward.

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One thing about curl…

You can remember that for a force F if curlĂ—F is 0 it means that the force is conservative.

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Mujhe vo determinant kabhi yaad nahi rahta tha. Actually usse agar simplify karega to it leads to:
Partial derivative of force wrt x= partial derivative of force wrt y = partial derivative of force wrt z

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Yaha tak sahi hai. It works if force is 2 dimensional.

3 dimensional force ke liye this is wrong… 3d ke liye curl×F hi karna padta hai.

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Ohh, i didn’t know that
But JEE me 3 dimensional force aata bhi nahi tha WEP questions me

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Yes.

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Thank you all.
Great explanations. Understood.

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