Question

calculate total resistance in acircuit and current flowing through it​

Answer 1

Let,

R1=2 ohm

R2=4 ohm

R3=4 ohm

$R_b=5 ohm$

Now,

$\frac{1}{R_a} = \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}$

$R_a= \frac{R2*R3+R1*R3+R1*R2}{R1*R2*R3}$

putiing values,

$R_a= \frac{4*4+2*4+2*4}{2*4*4}$

$R_a= \frac{16+8+8}{32}$

$R_a=1 ohm$

now,

$R=R_a+R_b$

$R=1+5$

$R=6 ohm$

so total resistance is 6 ohm

and,

Given:-

V=6 V

as we know,

$I= \frac{V}{R}$

$I= \frac{6}{6}$

$I = 1 ampere$

so the current is 1 ampere.