24koi toh karo..its from YG files
Sorces of electromagnetic fields are involved in
a)∫E.dS=q/ε
b)∫B.dS=0
c)∫E.dl=-d∫B.dSdt
d)∫B.dl=μI+μεd∫E.dSdt
e)F=2μI I' l4πr
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4 Answers
1Had Maxwell said the above quoted opening statement, there would hardly be any doubt about
its truthfulness. By the end of 19th century it was well established that light is but a oscillation
of the electric and magnetic fields in space that travels as time goes by. The following four
equations (Maxwell's equations):
a) , b) , c) and d)
so a,b,c,d are correct for sure but can't say abt (e)
39B) is also a Maxwell equation Uttara...it is Gauss Law in magnetostatics. For any closed surface, magnetic field lines entering are equal to magnetic field lines leaving. This law/equation proves that magnetic monopoles do not exist.
Maxwell proposed five such equations.
A) is Gauss Law in electrostats, B) in magnetostats, C) is Faraday's Law of electromagnetic induction, D) is Ampere Maxwell Law(correction of Ampere's Circuital Law) and the fifth is of Lorentz Force...but I don't think E) is eq of Lorentz Force.
For question's answer it would be C),D). Dunno about E)..