Electric Current and Circuits

A complete, unbroken path that charges can flow through is called an __________________.

• conductor

• electric circuit

• electric current

• insulator

A circuit with only one path for the current to flow is a __________________.

• parallel circuit
• series circuit
• mini circuit
• device

Grabbing the negative terminal of a car battery with both hands is safe, while grabbing the positive with one hand and the negative with the other is not safe, because ---.

• both hands on the positive terminal have no potential difference

• charge never flows into or out of the positive terminal

• the human body cannot have electricity flow through it

• the car's rubber tires are positively charged

Circuits often include a _____________ to control the flow of current.

• switch
• conductor
• voltage
• current

Tags

NGSS.MS-PS2-3

When more branches are added to a parallel circuit, ____________________.

• resistance decreases
• voltage increases
• nothing changes

this is the symbol for a _____?

• switch
• light 
• battery
• wires

Tags

NGSS.HS-PS2-5

This is an example of a ______ circuit

• Series

• Parallel

• Open

• Dihexihedral

What is the resistance of a light bulb that has 3 A flow through when it is placed across 9 V?

• 1/3 ohms

• 3 ohms

• 27 ohms

• 9 ohms

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

• 1/4 A

• 144 A

• 4 A

• 0.4 A

The total resistance in this circuit is 

• 100 ohms
• 450 ohms
• 400 ohms
• 30 ohms

Tags

CCSS.7.NS.A.1D