Question

three resistances are connected in parallel with 30 V battery the electric current of 7.5 a flows through the circuit from the battery if the value of two resistors are 10 10 ohm and 12 ohm determine the value of the third resistor​

Answer 1

Explanation:

Req in parallel=1/r1+1/r2... .V/I=R.Rtotal=4ohm

1/4=1/10+1/12+1/r.1/r=26/60.r=60/26=2.3(approx)