Question
Physics Question on Electric Current
An alternating voltage V = 140 sin 100 πt is connected across a pure resistor of resistance 40 Ω. What is the rms current through the resistor? (Take √2 = 1.4)
A
3.5 A
B
2.5 A
C
4.9 A
D
0.1 A
Answer
2.5 A
Explanation
Solution
The correct option is(B):2.5 A