Question

A direct current of 10 A is superimposed on an
alternating current 1= 40 cos at (A) flowing through
a wire. The effective value of the resulting current
(1) 10- ZA
(2) 20/2 A
(3) 20.3 A​

Answer 1

Explanation:

ANSWER

I

ac

=

2

10

I

dc

=5

The effective value of resulting current will be,

I=

I

ac

2

+I

dc

2

I=

(10/

2

)

2

+5

2

I=

50+25

I=5

3

A