Circuits Worksheet - Free Printable

Let's solve the problem step by step based on the image you provided.

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Understanding the Circuit

The diagram shows a simple electrical circuit with:

- A battery (labeled with + and – terminals),
- A light bulb,
- A switch, which appears to be in the open position (the switch lever is up, not connecting the two sides),
- Wires connecting these components.

We are told:
> "The current flows in a circuit from the negative terminal and back to the positive terminal."

This refers to electron flow, which is the actual movement of electrons. However, in traditional circuit analysis, we often refer to conventional current, which flows from positive to negative. But the instructions here specifically say: *"current flows from the negative terminal and back to the positive terminal"*, so we’ll follow electron flow as described.

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Step 1: Draw Arrows to Show Current Flow

Even though the switch is open, we are asked to draw the path the current would take if the circuit were closed.

So, assuming the switch were closed, the path would be:

1. From the negative terminal of the battery →
2. Through the wire →
3. To the light bulb →
4. Through the wire to the switch →
5. Through the switch (when closed) →
6. Back to the positive terminal of the battery.

✔ So, arrows should be drawn in this direction:
Battery (-) → Wire → Light Bulb → Wire → Switch → Wire → Battery (+)

But since the switch is open, the circuit is broken, so no current flows.

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Now, Answer the Questions

#### 1. In which direction does the current flow?

> From the negative terminal of the battery, through the circuit, and back to the positive terminal.

This matches the description given in the text. It’s electron flow (which is opposite to conventional current).

✔ Answer: From the negative terminal to the positive terminal.

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#### 2. Is the above circuit open or closed?

Look at the switch: it is up, meaning the connection is not made. The path is broken.

> "When the switch is open, there can be no current flow because the road from the negative terminal to the positive terminal is broken. This is called an open circuit."

✔ Answer: Open

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#### 3. What is a circuit?

Based on the definition in the text:

> "A circuit is a road or network of roads. This circuit will take the current to its place of work and back to where it came from. The word circuit means circle, which is basically the path the current will take."

✔ Answer: A circuit is a complete path that allows electric current to flow from the source, through components, and back to the source.

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#### 4. If there is a break in the circuit, will the current return to its source?

No. A break stops the flow of current. Without a complete path, electrons cannot move.

As stated: "When the switch is open, there can be no current flow because the road... is broken."

✔ Answer: No

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✔ Final Answers:

1. From the negative terminal to the positive terminal
2. Open
3. A circuit is a complete path that allows electric current to flow from the source, through components, and back to the source.
4. No

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🔧 Additional Note:

If you were to draw the arrows on the diagram:
- Start at the negative terminal of the battery.
- Draw an arrow going to the light bulb.
- Then from the light bulb to the switch.
- Then from the switch back to the positive terminal.
- But do not draw an arrow through the switch if it's open — just show the path if it were closed.

And remember: no current flows when the switch is open, even if the path is otherwise complete.

Let me know if you'd like a visual sketch description!