7.2 Series Circuits and Parallel Circuits

What is a circuit diagram?

• A tool used to measure voltage.

• A model of an electric circuit.

• A type of complex circuit used in computers.

• A component that ensures constant current in a circuit.

How is an ammeter connected in a circuit to measure current?

• In parallel

• In series

• In a loop

• Not connected to the circuit

How is a voltmeter connected in a circuit to measure voltage?

• In series

• In parallel

• In a loop

• Not connected to the circuit

Organize these options into the right categories.

Groups:

(a) Series Circuit

,

(b) Parallel Circuit

• Only has one path for electrons

• The voltage across each resistor adds up to the total voltage supplied by the battery

• Increased resistance, decreases current

• Has multiple paths for electrons

• The voltage is the same thoughout

• Increased resistance, increases current

• The current is the same throughout

• The current will chose the path with least resistance

• The current across each resistor adds up to the total current

What happens in a parallel circuit when one component stops working?

• The entire circuit stops working.

• The current in the circuit becomes zero.

• The rest of the device continues to function.

• The voltage in the circuit drops to zero.

What would happen to the other two bulbs if you removed one bulb in this circuit?

• The other two bulbs would stay lit

• The other two bulbs would go out

• The brightness of the remaining bulbs would increase

• The remaining bulbs would change color

Why would the other two bulbs stay lit when you removed one bulb in this circuit?

• Because it is a parallel circuit

• Because it has a stronger power source

• Because the bulbs in it are of a different type

• Because the remaining bulbs are connected to a backup circuit

What is the function of a resistor?

• Opens and closes the circuit

• Measures current through a device

• Converts electrical energy to heat energy

• Allows electric charge to flow

Which component is used to open and close the circuit?

• Ammeter

• Voltmeter

• Switch

• Resistor

Match the following.

• Resistor

• 
• Device that measures voltage

• 
• Device that measures current

• 
• Battery

• 

Tags

NGSS.HS-PS2-5