A 220 V, 60 Hz alternating current supply is connected to an inductor of 3.5H. What is the current passing through the inductor?
A
0.0167 A
B
0.1670 A
C
1.6700 A
D
16.7000 A
E
167.0000 A
Verified Correct Answer: B.
Physical Principles & Numerical Solution
V = 220V, F = 60Hz and L = 3.5H
I = \(\frac{V}{X_L}\)
but \(X_L = 2 \pi FL\) = 2 x 3.142 x 60 x 3.5 = 1319.64\Omega
I = \(\frac{220}{1319.6}\) = 0.1667A OR 0.1670A
Source: Myschool Past Questions Archive (Record #42834)