Electro Magnetic Induction And Alternating Currents Question 157
Question: If a direct current of value ampere is superimposed on an alternative current flowing through a wire, what is the effective value of the resulting current in the circuit?
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: D
Solution:
-
as current any instant in the circuit will be
so,
i.e.But as
and So,