Question

What is the effective (rms) current value for an ac current with an amplitude of 10 a?

Answer 1

The relationship between peak voltage and root mean square voltage for a symmetrical sine wave is:

rms value = peak value / √2

Using this formula

I(rms) = I(peak) / √2
I(rms) = 10 / √2

The effective or rms value of the current is 7.07 A