Is a resistance and a light bulb a pure resistance circuit?

Is a resistance and a light bulb a pure resistance circuit?

Only junior high school physics as a pure resistance circuit. In fact, there is not a light bulb

In the experiment of pencil lead resistance, two batteries and a small light bulb are connected in series with wires to observe the luminous degree of the light bulb, and then the light is given to the circuit
In the experiment of pencil lead resistance, two batteries and a small light bulb are connected in series with wires (Fig. a), and the luminous degree of the light bulb is observed. Then a 5cm long pencil lead is connected in series with the circuit (Fig. b), and you will find that the light is dimmer than just now. Continue the experiment with two pencil leads (Fig. C), It's connected in parallel with the first pencil lead in the circuit, and you'll see that the light is brighter than when only one pencil lead is connected (tooting)
(1) In the comparative experiment of figure B and figure C, which experimental conditions are the same? Which experimental conditions are different? What is the reason of the comparative experiment?
(2) In the comparative experiment of figure B and figure D, which experimental conditions are the same? Which experimental conditions are different? What is the reason of the comparative experiment?
It's about eight lessons in science!

1. In Figure B, a refill is connected in series, and in Figure C, two refills are connected in series. Therefore, the length of the conductor has changed, but the conductor temperature and cross-sectional area have not changed. It shows that the longer the conductor length is, the greater the resistance is when the conductor temperature and cross-sectional area remain unchanged
2. In Figure B, there is one refill in series, and in Figure C, there are two refills in parallel. Therefore, the conductor's cross-sectional area has changed, and the conductor's length and temperature have not changed. It shows that the larger the conductor's cross-sectional area is, the smaller the resistance is when the conductor's temperature and length remain unchanged