Square loop ABCD of area 20cm2 and resistance 5Ω is rotated in a magnetic field B = 2T through 180∘, with field perpendicualr to the loop initially. In 0.01 seconds the magnitude of induced e.m.f is …………….
A
0.4 V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.8 V
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
0.6 V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1.0 V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B 0.8 V e=BAN(cosθ1−cosθ2)t =(2×20×10−4×[1−(−1)]0.01 =0.8V