A long solenoid of radius R carries a time (t) - dependent current It=I0t1−t. A ring of radius 2R is placed coaxially near its middle. During the time interval 0≤t≤1, the inducted current IR and the induced EMF (VR) in the ring changes as:
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
Direction of IR remains unchanged and VR is maximum at t=0.5
b
At t=0.5 direction of IR reverses and VR is zero
c
Direction of IR remains unchanged and VR is zero at t=0.25
d
At t=0.25 direction of IR reverses and VR is maximum
answer is B.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
Current, I=I0t−I0t2 Magnetic flux, ϕ=BA=μ0nIAInduced emf, VR=−dϕdt=−μ0nAI01−2t Hence, VR=0 at t=12 And IR=VRResistance of loopSo, 0