Alternating current can induce voltage because it has a
A
ripple value
B
varying magnetic field
C
weaker magnetic field than direct current
D
stonger magnetic field than direct current
E
high peak value
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Due to the change in the voltage in an AC, which either increases or decreases, the magnetic field around it is alwats eithercollapsing or expanding (varying magnetic field).
Source: Myschool Past Questions Archive (Record #29019)