A toroid coil has 1000 turns and diameter of 30 cm with the area of cross section of 2 cm2. Calculate
i) inductance of coil
ii) induced e.m.f when the a current of 2 A is reversed in 0.03 secs.

Asked by Topperlearning User | 20th May, 2015, 12:59: PM

Expert Answer:


d=30 cm

r=15 cm=15×10-2 m

A=2 cm² = 2×10-4 

di=2 A

dt=0.03 s


Answered by  | 20th May, 2015, 02:59: PM