Question

In heating arrangement if alternating current having peak value of 28 a is used to produce same heat energy if dc is used it's magnitude

Answer 1

Explanation:

Given In heating arrangement if alternating current having peak value of 28 a is used to produce same heat energy if dc is used it's magnitude

The alternating current has a peak value of 28 A to produce the same heat energy. We need to find its magnitude if dc or constant current is used.

We know that I rms = Io / √2

                                 = 28 / √2

                                 = 28 / 1.414

                                  = 19.80 A

So I rms = 19.80 A  ≅ 20 A