Questions
A uniform magnetic field B exists in a direction perpendicular to the plane of a square loop made of a metal wire. The wire has a diameter of 4mm and a total length of 30 cm. The magnetic field changes with time at a steady rate . The induced current in the loop is close to
(Resistivity of the metal wire is )
detailed solution
Correct option is C
Flux=ϕ=Bℓ2cosθ [Field is perpendicular to the loop. So, θ=00]Induced emf =ε=dB dtℓ2 [here ℓ=side of square ]Induced current =i=εR⇒i=dBdtℓ2(ρL)A [here L=total perimeter of square, ℓ=L4]⇒i=dBdtLA16ρ⇒i=0.032×0.3×π×22×10-616×1.23×10-8=0.61 ATalk to our academic expert!
Similar Questions
A square wire loop, of side a has a long straight wire carrying a constant current i that passes through the centre of the loop and perpendicular to its plane as shown in Fig.
The current induced in the square loop is
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests