Physics, asked by sargun1, 1 year ago

the magnetic flux linked with a coil is given by the equation- 8t^2+ 3t+5 . induced emf in coil at FOURTH second will be

Answers

Answered by kvnmurty

induced emf ξ = - $\frac{d \Phi}{dt},\ where\ \Phi=total\ magnetic\ Flux\ through\ the\ coil.$

ξ = - d (8 t² + 3 t + 5) / d t
= - 16 t + 3
= -16 * 4 + 3 = - 61 Volts.

kvnmurty: click on thanks button above please

sargun1: so there is no role of the word fourth? i mean is there any difference between flux in FOUR seconds and flux at FOURTH second?

kvnmurty: magnetic flux is an instantaneous quantity.. so you find it at t = 1, 2, 3, 3.4 sec.. like that... for finding emf induced, perhaps there is no meaningful use for adding flux over a duration of time..

kvnmurty: instantaneous emf generated depends of rate of change of flux at a point of time only..

sargun1: thanxx..

Answered by DeeksuManvi

Answer:

Explanation:

flux = 8t 2 +3t + 5

E = d(flux)/d(t)

= d(8t2+3t+5)/dt

=16t+3

flux at 4th second = flux at t=4 — flux at the t= 3

= 16(4)+3 —16(3)+3

= 16

Previous Question

Next Question