Question 171: AC fundamentals

Question

A direct current of $$4 \mathrm{~A}$$ and an alternating current of peak value $$4 \mathrm{~A}$$ flow through resistance of $$3\, \Omega$$ and $$2\,\Omega$$ respectively. The ratio of heat produced in the two resistances in same interval of time will be :

Accepted Answer

Ratio = $${{i_1^2{R_1}} \over {{{\left( {{{{i_2}} \over {\sqrt 2 }}} ight)}^2}{R_2}}} = {{{4^2} 	imes 3} \over {{{\left( {{4 \over {\sqrt 2 }}} ight)}^2} 	imes 2}}$$
$$\Rightarrow$$ Ratio = 3 : 1

Answer

3 : 2

Answer

3 : 1

Answer

3 : 4

Answer

4 : 3

AC fundamentals

A direct current of $4 \mathrm{~A} and an alternating current of peak value 4 \mathrm{~A} flow through resistance of 3\, \Omega and 2\,\Omega$ respectively. The ratio of heat produced in the two resistances in same interval of time will be :

Choose the correct answer: