Electricity
Basics
Basics
What are the two types of electricity?
100 BONUS POINTS if you can define each type.
Static electricity
Current electricity
What part of a circuit is the source of electric current?
Source (i.e. battery)
What type of circuit has only one path for current to flow?
Series Circuit
What is the unit for energy?
Joules (J) or kilojoules (kJ)
What is the unit for measuring resistance?
Ohms
Finish these sentences:
Like charges ________
Unlike charges ________
Like charges repel.
Unlike charges attract.
What part of a circuit turns the device on or off?
Control (i.e. switch)
What type of circuit has multiple pathways for current to flow?
Parallel Circuit
What form of energy is lost by most devices?
Heat (Thermal) Energy
What device is used to measure current?
Ammeter
What are the two types of electrochemical cells?
100 BONUS POINTS if you know which type of cell is rechargeable.
Primary
Secondary - is rechargeable.
What safety device melts when too much current flows through a circuit?
A fuse.
The pathways in a parallel circuit are also known as ____?
Branches
Biomass is a ______ energy source.
100 BONUS POINTS if you can define biomass.
Renewable.
Energy made by living things.
What is one way voltage can be compared to water?
Waterfall.
What are two ways to prevent electric discharge?
Grounding
Anti-static spray
Ionizers
You have a lightbulb in a simple circuit, what would happen to the bulb's brightness if a resistor was added before the lightbulb?
The bulb would dim.
It increases - i.e. 12 V + 12 V = 24 V
What are 4 of the 7 forms of energy?
100 BONUS POINTS if you include the sentence we use to remember the 7 forms of energy.
Atomic/Chemical/Heat/Electric/Light/Mechanical/Sound
AC HELMS
Shorter wire
Thicker wire
Lower temperature
Use a different metal
Stronger electrolytes
Put more of the electrode into the electrolyte
Change the type of electrode
What circuit device would be found in your car's volume dial?
What will happen to the brightness of lightbulbs in a parallel circuit if more bulbs are added?
What is alternating current?
Type of electric energy in which the current can change direction.
What is the symbol and unit for current?
Symbol: I
Unit: A - amperes