Physics, asked by bhagwantkaurnoor, 10 months ago

the parallel combination of three resistance takes curnt of 7.5A from 30V supply.if the two resistors are of 10ohm and 12ohm.fimd third one?

Answers

Answered by Anonymous

Answer:

-> Third resistor is of 15 ohm.

Explanation :

-> In the attachment given

Attachments:

Answered by maddulamounika111

Answer:15Ohm

Explanation:Given that

i=7.5A and v=30v

Then ,from ohms law ,

V=iR

30=7.5×R

R=300/75

R=4ohms

Now,Req=4ohm

1/R=1/R1+1/R2+1/R3

1/4=1/12+1/10+1/R3

8R3=120

R3=120/8

R3=15

Hence R3=15 ohm

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