What is the approximate peak value of an alternating current producing four times the heat produced per second by a steady current of 2 A in a resistor
a) 2.8 A
b) 4.0 A
c) 5.6 A
d) 8.0 A
The answer given is 5.6 A .. explain how ?

Irms= 2*Isteady(this is given in the question i.e. four times the heat produced)
Irms=Imax/1.414
Using the above 2 relations we can find out that,

Imax=2.828 Isteady
.
Imax=2.828*2=5.6 A

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