Electric Circuits

Physics Honors 2019/20

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Read below and pages 670 -671 & 680-684 in your book and answer the following questions.

1. Cartoon Questions

a) Who invented the battery? 2. Electric Potential (Voltage): (pages 670-671) add emf

a) What is electric potential? b) What is another name for electric potential? c) What are the two different units used for electric potential?

Electric Circuits

LCHS Physics Honors 2019/20

Page 2 of 24

3. Flow of Charge: (page 681)

a) What causes charge to flow in an electrical circuit? b) What is potential difference? A common name for potential difference is… c) Potential difference is equivalent to what in a water system. d) While _________________can be used to create a difference in water level in a water

system, what can be used to create potential difference in an electrical system?

4. Current: (page 682)

a) What is electrical current? b) What carries the charge through the electrical system? c) What are the two different units used for current?

Electric Circuits

LCHS Physics Honors 2019/20

Page 3 of 24

5. Resistance: (page 684) Add load

a) The flow of electrical charge in a circuit depends on what two things? b) What three things affect the resistance in electrical systems? c) With regard to resistance, thin wires have ____________ resistance than thick wires,

and __________ wires have more resistance than ________ wires

d) With regard to temperature, hotter wires generally have ____________ resistance than

cooler wires. Explain why: e) What are the units for resistance? f) What is unique about a Superconductor?

Item Variable Base

Units Units

Name Symbol Potential Difference

Current

Resistance

Power

Electric Circuits

LCHS Physics Honors 2019/20

Page 4 of 24

Circuit Symbols:

On the lines below indicate what each symbol means for in the circuit diagram. _______ What terminology is used for measuring Voltage? “Voltage” drop refers to what? What terminology is used for measuring Current?

A

V