COMEDK2015PhysicsAlternating Current
If instantaneous current is given by i=4 ( t+ ) , then the rms value of current is
Options
- A2 2 ~A
- B4 ~A
- C4 2 ~A
- Dzero
Correct answer
A. 2 2 ~A
Step-by-step solution
Instantaneous current, i=4 ( t+ ) Comparing with standard equation, i=i₀ ( t+ ) , we get Peak current, i₀=4 ~A Hence, aligned i_ rms &= i₀ 2 &= 4 2 =2 2 ~A aligned