A wire in the form of a circular loop of radius 10 cm lies in a plane normal to a magnetic field of 100 T. If this wire is pulled to take a square shape in the same plane in 0.1 s, average induced emf in the loop is:
Text Solution
Verified by ExpertsThe correct answer is:
C
According to Faraday's law of electromagnetic induction,
Let r be the radius of circle; then side of square formed
Change in area of the loop
Hence average emf induced 
volt.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A coil of resistance is placed in a magnetic field. If the magnetic flux linked with the coil var…
In a coil of resistance , the induced current developed by changing magnetic flux through it, is s…
In figure, final value of current in resistor, when plug of key K is inserted is
A conducting ring of radius r is placed perpendicularly inside a time varying magnetic field given …
In the circuit shown in figure, . the switch S is closed at . At , the current in the circuit is…
The north-pole of a long horizontal bar magnet is being brought closer to a vertical conducting pla…