A) uses circuits symbols to draw a series circuit with a battery connecting wires into lightbulbs

Question

b) draw a parallel circuits, using the same components as a
c) describe the difference in current flowing in the two circuits a and b
d) what will happen to the brightness of the bulbs in circuit a if one of the boats is unscrewed
e) what will happen to the brightness of the bulbs in circuit b if one of the light bulbs is unscrewed

Answer 1

a)

[Battery] (+) --- [Wire] --- [Lightbulb] --- [Wire] --- [Lightbulb] --- [Wire] --- (-)

b)

[Battery] (+) --- [Wire] --- [Lightbulb] --- [Wire] --- (-)
|
[Wire]
|
[Lightbulb]
|
[Wire]
|
(-)

c) In a series circuit, the current is the same through all components. In a parallel circuit, the current is divided among the branches, with some going through each component.

d) If one of the light bulbs in circuit a is unscrewed, the other light bulb will not light up because the circuit is broken.

e) If one of the light bulbs in circuit b is unscrewed, the other light bulb(s) will still light up because the circuit branches allow current to continue flowing through the other branches/components. However, the remaining bulb(s) will receive more current and may become brighter.