What direct current will produce the same amount of thermal energy, in a particular resistor, as an alternating current that has a maximum value of 2.60 A? (Answer: 1.84 A)

Question

ash2326 · Answer

This is the definition of RMS current. RMS or effective value of a current is by definition such that the heating effect is the same for equal values of alternating- or direct-current.
Here the ac current's max value is 2.60 A
Can you find the rms value of this current ?

anonymous · Answer

That is I rms with the formula: 

I rms = Imax/(sqrt(2)) 

So 
I rms = Imax/(sqrt(2))
 I rms = 2.60 /1.4142 
I rms = 1.838 A