Question

solve all the 3 questions ​

Answer 1

Answer:

MARK ME AS BRAINLIEST

Explanation:

14. V= IR , I = V/R , R series = R 1+R2 , R s = 35ohm

I = 7/35 , = 1/5A

V 1 = I×R 1 , = 1/5×20 , V 1 = 4V

15. IT IS IN PARALLEL

a) R p = 1/R 1 +1/R 2 , = 1/30 + 1/ 15 , = 3/30

R p= 1/10 ohm

c) at 30 ohm , I=V/R 1 , = 6/30 , I 1 = 1/5 A

b) total I = I 1 + I 2 , I 2 = V/R 2 , I 2 = 6/15 A

I = 1/5 + 6/ 15 , = 9/15 A

16. let R 1 = 5 , R 2 = 10 , R 3 = 10

R 2 and R 3 are parallel , R p = 1/10 + 1/10 , = 1/5 ohm

so , R 1 and R p are series , R s = 5+ 1/5 , = 26/5 ohm

the current is , I =V/R s , = 6/26/5

= 30/26 , = 15/13 A