Question

pls answer this question.

chapter - electricity
class 10

Answer 1

3ohm or 6 ohm wale ko parallel m solve krlo jo aye usee 10ohm ke saath series m
fir aapke pass R total aa jayega
fir v=IR se solve kr do

Answer 2

first we see in the circuit that 3 ohm and 6 ohm resistance are in parallel


so equivalent resistance = 3*6/(6+3) = 18/9 = 2 ohm

this combination is in parallel with 10 ohm


so now equivalent = 2+10 = 12 ohm
batter is of 12 v


connected across equivalent resistance 12 ohm
so current i = V/R = 12/12 = 1 ampere

thus current in 10 ohm will be 1 ampere
but in 3 and 6


current will be distributed in inverse proportion


let current in 6ohm be 3x


so current in 3 ohm will be 6x


3x+6x = 1 (since 10 ohm and combination of 3 ohm and 6 ohm are in series)

X = 1/9

thus current in 3 ohm = 6x = 6/9 = 2/3 ampere