Question

the resistance of a given electric circuit is 60 ohm what resistanxe should be connected with it so that the net resistance become 20 ohm

Answer 1

Explanation:

1/60 + 1/x = 1/20

(x+60)/60x = 1/20

20 = 60x/x+ 60

so ,

20x + 1200 = 60x

40x = 1200

x = 1200/ 40

x = 30

Answer 2

Answer:

Explanation:

given= 60 ohm

according to question |||

1/60 + 1/x = 1/20

x+60/60x = 1/20

20= 60x/x+60

so

20x +1200 = 60x

40x = 1200

x= 30 ohm