Given that Vs $>0$ V and $0<$ R $<$ $2,$ which circuit has a bulb that is not illuminated? That is$,$ which bulb does not carry an$)$ current?

Comment: You may model the bulb also as a resistance, not necessary the same value as R$.$

$6$V

$2$R

$2$R

$6$V

$2$R $3$

$($a$)$

$2$R

T$10$V

S$3$R

$($b$)$

$>2$R

T $10$V

$3$

$3$R

$($e$)$

S$2$R

$6$V

$2$R

$2$R

$2$R

$6$V

$2$R

$2$R

$2$R

T$10$V

T $6$

$32$R

$3$R

$($c$)$

S$2$R

SIR

$32$R

T $10$V

$33$R

$32$R

$-10$V

$33$R

$2$R

$$

F$2$

Chy

$$

DIl

$$

FS

F$7$

$$

F$8$

F$9$

prtsc

FIO

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