Question

find value of current through 30 ohm resistor.​

Answer 1

Answer:

The equivalent resistance of pair of parallel 30 ohm resistor,

R

′

1

=

30

1

+

30

1

or R

′

=900/60=15Ω

now this equivalent resistance is in series with a 9 ohm resistor , so total resistance of the circuit ,

R=15+9=24Ω

given that ,current I=0.25A

therefore , voltage applied to circuit V=IR=0.25×24=6V