Q.
A coil of mean area 500 cm2 and having 1000 turns is held perpendicular to a uniform field of 0.4 gauss. the coil is turned through 180o in 1/10 second. The average induced emf (in V) is
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
answer is 0.04.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
When the plane of coil is perpendicular to field, the angle between area A→ and field B→ is 0o.The flux linked with coil ϕ1=NBAcos00=NBA. when the coil rotates 1800 flux linked φ2=BANcos1800=-BAN∴ Change in flux ϕ=ϕ2−ϕ1=−2NBA The magnitude of the induced emf is ε=−dϕdt=2NBAdt=2×1000×0.4×10-4×500×10-4110=0.04V
Watch 3-min video & get full concept clarity