Page 37 - Science Course 3 (Book 2)
P. 37
Mo9-L2b: What are the Two Types of Electric Circuits?
Key Concept electric resistance
What is Electric Current and an Electric Circuit? a measure of how dif cult it is for an electric
current to f ow in a material.
What are the parts of a simple electric circuit?
voltage
the amount of energy used to move one coulomb
of electrons through an electric circuit.
SUMMARY
What is Electric Current and an Electric Circuit?
A switch makes a simple circuit useful.
What are the Two Types of Electric
Mo9–L2b
Circuits?
KEY CONCEPTS:
1. How do the two types of electric circuits differ?
Let’s Begin
Vocabulary A-Z The Circuit—A Path for Electric Current
Let us learn some vocabulary
There are many uses of electric energy, and most
uses require specif c types of sources of electric
generator energy.
a machine that transforms mechanical energy to
electric energy.
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