# Circuit Review of Exit Ticket

```Circuit Review
of Exit Ticket
• We know this is a parallel circuit because there is more
than one route for the electrons (current) to take
• The reason the answer is a is because it is a parallel
circuit, therefore a switch at 2 would only turn off
the first light bulb and a switch at 3 or 4 would only
turn off the second light bulb
• This is the correct answer because we need to
complete the series circuit reconnecting the light bulb
to the battery
• All circuits must contain a wire, a load, and a
source of emf
• In a series circuit, if one load is
broken/disconnected then all loads go out
chemical reactions, which in turn power the
electrical energy, which is used to shine the
light
Circuit A
Circuit B
SERIES CIRCUITS
To solve for total current: It = I1 = I2 = I3 =…
To solve for total voltage: Vt = V1 + V2 + V3 +…
To solve for equivalent resistance: Req = R1 + R2 + R3 +…
PARALLEL CIRCUITS
To solve for total current: It = I1 + I2 + I3 + …
To solve for total voltage: Vt = V1 = V2 = V3 = …
To solve for equivalent resistance:
1/Req = 1/R1 + 1/R2 + 1/R3 + …
```