# Building Circuits (Grades 11-12)

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## Building Circuits

**Instructions:**
Read each question carefully. Choose the answer that best fits the question. Short answer response questions must be responded to in complete sentences. If the question involves calculations, you must show all your math work.

1.

Your lab partner is helping you construct a circuit using four 1.5V batteries. He sets them up like the image. What will the voltage provided by this set-up be?

- 1.5 V
- 3 V
- 6 V
- 9 V

2.

How many parts of this circuit cause resistance?

- 1
- 3
- 4
- 5

3.

Label the following parts of a circuit schematic.

4.

How much voltage will this battery set-up provide if each of the four is a 1.5 V battery?

- 1.5 V
- 3 V
- 6 V
- 9 V

5.

A short circuit would happen if you change what about this circuit schematic?

- unscrew the lightbulb
- remove the single resistor
- close the switch
- disconnect the battery

6.

If you want to increase the current in a circuit, and you have two 9V batteries, you should

- connect the batteries in series because it will increase the voltage to 18 V.
- connect the batteries in parallel because it will decrease the voltage but provide more amperes.
- connect the batteries in series because it will decrease the voltage but provide more amperes.
- connect the batteries in parallel because it will increase the voltage to 18 V.

7.

What is the total resistance of this schematic, if the first resistor has a resistance of [math]7Omega[/math], and the other two each have a resistance of [math]6Omega[/math]? Justify your answer.

8.

Meg creates a circuit with a 12 volt battery. It is a parallel circuit with 3 branches and each branch has a 3 Ohm resistor. How much voltage will drop at each resistor on the circuit?

- 4 Volts
- 12 Volts
- 36 Volts
- None of the above

9.

A simple circuit contains only wires, a resistor drawing a current of 0.83 A, and a 1.5 V battery. What is the resistance of the resistor?

10.

What is the total resistance of the circuit in the schematic? Given: [math]R_"bulb"=13.7Omega[/math], [math]R_1=24.9Omega[/math], [math]R_2=30Omega[/math], and [math]R_3=18.6Omega[/math]

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