9.04: Circuits

​Get ready for review questions!

Multiple Choice

The unit for current is the 

• Volt
• Ohm
• Electron
• Amp

Multiple Choice

What voltage is needed to cause a 2A current flow through a 10Ω resistor?

• 5V
• 0.2V
• 20V
• 200V

Multiple Choice

A material in which electrons are able to move easily

• Circuit
• Insulator 
• Resistance 
• Conductor 

Multiple Choice

In a ________ circuit there are multiple paths for the current to take.

• Series
• Parallel

Multiple Choice

What type of circuit is pictured?

• series
• parallel

Multiple Choice

If the light bulb in the middle burned out, what would happen to the other two?

• The light bulb to the left would stay lit, but the one to the right would turn off.

• They would both stay lit.

• The light bulb to the right would stay lit, but the one to the left would turn off.

• They would both turn off.

Example #1: Draw a series circuit with a battery, two light bulbs, one resistor, and an open switch. 

Example #2: Draw a parallel circuit with two batteries, two light bulbs (on separate branches), a voltmeter on one of the branches, and a switch that could turn off the whole circuit.

Draw

Draw a series circuit with two batteries, a light bulb, and a closed switch.

Draw

Draw a parallel circuit with one battery, 3 light bulbs, 1 resistor, and 1 switch. 

Multiple Choice

How to you calculate the total resistance in a series circuit?

• R1 + R2+ R3

• R1 - R2 - R3

• 1/R1 + 1/R2 + 1/R3

• R1 = R2 = R3

Multiple Choice

What is the equivalent or total resistance (R_e) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Multiple Choice

How do you calculate total resistance in a parallel circuit?

• R1 + R2 + R3

• R1 - R2 - R3

• 1/R1 +1/R2 + 1/R3 = 1/RT

• R1 = R2 = R3

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