Question

Two resistors of 30 ohms and 60 ohms are connected in parallel and these two resistors are further connected in series with a 20 ohms resistors.
the current flowing through the 20 ohms resistor is 5 ampere.
calculate; 1. the current through the 30 ohms and the 60 ohms.
2. the total circuit voltage.

Answer 1

Answer:

equivalent resistance for 30 and 60 ohm will be 20 ohm

now the eq. of above comnination is in series with another 20 ohm res.

so the equivalent for these res. is 40 ohm .

if current is flowing from 20 ohm is 5A then it also flowing through another 20ohm equivalent res.

so voltage = IR = 40*5= 200 v.

this 200 v is distributed equally in 20 ohm and eq of 40&60 ohm

the current through 30 ohm and 60 ohm will be distributed because they are in parallel combination and voltage remain same

current in 30 ohm = v/r =100/30

current in 60 ohm = 100/60