Worksheet for identifying series and parallel circuits with nine diagrams.

Let’s go through each circuit one by one and decide if it’s series or parallel.

What’s the difference?

- In a series circuit, all parts are connected in a single loop. The same current flows through every part — like beads on a string.
- In a parallel circuit, there are multiple paths for the current to flow — like lanes on a highway. Each bulb (or component) is on its own branch.

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Now let’s look at each numbered circuit:

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1)
The two bulbs are on separate branches that connect back together. Current can split and go through either bulb → Parallel

2)
All three bulbs are in one line — no branches. Current goes through one, then the next, then the last → Series

3)
Three bulbs, each on its own separate path from top to bottom → Parallel

4)
Three bulbs in a row, one after another, with no splits → Series

5)
Three bulbs arranged so current must pass through each one in order → Series

6)
Two bulbs: one is directly across the battery, the other is also connected across the same points → they’re side-by-side → Parallel

Wait — actually, looking again:
In #6, the first bulb is connected straight across the battery. The second bulb is connected in a way that shares the same start and end points as the first? Actually, no — let me trace carefully.

Actually, in #6:
Current leaves battery, hits a junction. One path goes through left bulb, the other path goes through right bulb. Then they rejoin. So yes — two separate paths → Parallel

But wait — some might think it’s series because of how it’s drawn. Let’s double-check:

If you follow the wire: from positive terminal → splits into two wires → each goes to a bulb → both bulbs’ other ends join back → return to negative. Yes → Parallel

7)
Two bulbs in a single loop — one after the other → Series

8)
Two bulbs: each has its own path from the battery terminals → Parallel

9)
Three bulbs: all connected between the same two points (top and bottom rails) → each has its own path → Parallel

Wait — let’s check #9 again.

In #9:
Battery at bottom. Wires go up to a junction. Then three separate branches, each with a bulb, then all meet again at the top junction, then back to battery. Yes — classic parallel setup → Parallel

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Let me list them again clearly:

1) Parallel
2) Series
3) Parallel
4) Series
5) Series
6) Parallel
7) Series
8) Parallel
9) Parallel

I’ll verify #6 once more because sometimes drawings trick us.

#6: Battery on left. Wire goes up, splits: one path goes right to a bulb, then down; the other path goes down to a bulb, then right. Both bulbs connect to the same two nodes? Actually, yes — both bulbs are connected between the same two vertical lines → so voltage across each is same → parallel.

Yes, correct.

Final Answer:
1) Parallel
2) Series
3) Parallel
4) Series
5) Series
6) Parallel
7) Series
8) Parallel
9) Parallel