Question

in the circuit shown below, voltage drop across 5 ohm resistance is​

Answer 1

Answer:

1.5 V

Step-by-step explanation:

Given The resistance in series are 5 ohms and 15 ohms. So it will be 20 ohms. Now 10, 20 and 60 ohms are in parallel.

Since we know 1/R = 1/R1 + 1/R2 + 1/R3

So 1/R = 1/10 + 1/20 + 1/60 ohms

1/R = 6 + 3 + 1 /60

So  R = 6 ohms

The current is given as 1 A

 V = IR

   = 6 x 1 = 6 V

So across 20 ohms there is  6 V  

So current flowing through 5 ohms and 15 ohms = 6/20 = 0.3 amps

Therefore voltage drop across 5 ohm will be 5 x 0.3 = 1.5 V