Question

Resistors are connected as shown in
the circuit diagram.
The effective resistance between A and
B is:
​

Answer 1

Answer:

According to the diagram 4 and 3 ohm resistors are connected in series with 3 3 ohm resistors which are connected in parallel to each other

Rs=R1+R2

=4+3

=7 ohm

1/Rp= 1/R3+1/R4+1/R5

=1/3+1/3+1/3

= 1 ohm

Re=Rs+Rp

Re=3+1

therefore total resistance of circuit is 4 ohm

Answer 2

[text]R_{net}=\frac{11}{28}[text]ohm

Explanation:

In this circuit diagram,R_1=7ohm,R_2=3ohm are in series

$R_1+R_2=4ohm +3ohm$

             =7ohm

Now,$R_3,R_4,R_5$ are in parallel

$R_{parallel}=\frac{1}{R_3}+\frac{1}{R_5}+\frac{1}{R_6}$

$R_{parallel}=\frac{3}{3}$

$R_{parallel}=1 ohm$

Now,$R_{parallel},R_7$ $R_{net}=\frac{1}{7\ohm}+\frac{1}{4\ohm}$are in series

$R_{parallel}+R_7=1ohm+3ohm=4ohm$

$R_{net}=\frac{1}{7}ohm+\frac{1}{4}ohm$

[t$R_{net}=\frac{11}{28}$ohm