Question

Find the current drawn from the battery by network of
four resistors shown in the figure.​

Answer 1

Answer:

0.3 A

Explanation:

For this sum, we need to first calculate the total resistance,

Here we have two 10 ohms in series and four of them in parallel with a set of two on either side

Resistance in each arm = 10+ 10 ohms = 20 ohms

Total resistance = R

For finding resistance in the wire for parallel connection, formula is

1/R = 1/R1 + 1/R2+  ........+ 1/Rn

1/R = 1/20 + 1/20 = 2/20 = 1/10

therefore,

R = 10 ohms

By Ohms Law,

V = IR

I= V/R = 3/10 A = 0.3 A