Questions
A wire shaped as a semicircle of radius o rotates about an axis OO' with an angular velocity in a uniform magnetic field of induction B [Fig. (5)]. The rotation
axis is perpendicular to the field direction. The total resistance of the circuit is equal to fl. Neglect the magnetic field of induced current. The mean amount of thermal power being generated into the loop during a rotation period will be
detailed solution
Correct option is A
Φ=B⋅A=Bπα22cosωte=−dΦdt=Bπa22ωsinωtInduced current i=eR=Bπa22RωsinωtAt any moment t, the thermal power generated in the circuitPt=e×i=Bπa2ω221Rsin2ωtMean power (P) = Bπa2ω221R∫0T sin2ωt∫0T dt=12Rπωa2B22Talk to our academic expert!
Similar Questions
A conductor rod AB moves parallel to X-axis in a uniform magnetic field, pointing in the positive X-direction. The end A of the rod gets
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