Coulomb's Law
Circuits
Units
Lightning
Safety
100
Coulomb's Law is all about what 2 forces?
attract electric force and repel electric force
100
What's the difference between an open and a closed circuit?
An open circuit has a break in the path for current to flow, preventing electricity from flowing, while a closed circuit provides a complete, uninterrupted path, allowing electricity to flow.
100
The unit of measuring electric charge is:
Coulomb (C)
100
What produces lightning?
rubbing water drops and ice crystals within clouds
100
this child risks electrocution from buried power lines. What is the free service to call to locate buried power line before you dig?
Diggers Hotline
200
What is this?
visualizing invisible electric field
200
If one light bulb burns out, what will happen to the other two lights?
they will go dead
200
The unit of measuring electric current (flow of charges per unit time) is:
Ampere or Amp (A)
200
True or False:
Lightning usually strikes the earth about once every 4 days.
False: it strikes about 100 times a second somewhere across the planet
200
What is this?
GFCI outlet (ground fault circuit interrupter)
300
Which variable represents the Coulomb constant of 9 x 109 Nm2/C2 ?
k
300
What type of circuit is this?
3 resistors wired in parallel
300
The unit of measuring electrical potential energy (ability to do work) is:
volts (V)
300
This rock was formed when lightning struck a sandy beach. It's called a:
fulgurite
300
What does this symbol indicate?
Underwriters Laboratory has tested the product to make sure it is safe to use
400
This picture represents what law?
Coulomb's Law
400
Why won't the bulb light up?
short circuit
400
The unit of measuring electrical resistance (opposes the flow of electricity) is:
ohm
400
In a lightning storm, you can find safety inside a car because tires are made of rubber which is an ______________________ and won't conduct electricity.
insulator
400
What is this? What does it do?
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circuit breaker panel will shut off power to any circuit that is dangerously overloaded preventing fires
500
What diagram do we use to remember the equations to calculate watts, amps, volts, and ohms?
500
What type of circuit is this?
combination of both series and parallel
500
The unit of measuring power (how fast electricity can be converted into other types of energy) is:
Watt (W)
500
What US city is powered entirely by lightning energy?
none, this technology does not exist yet
500
Those grey cylinders up on the power poles bring the voltage of the electricity down to a safer level before it enters your home. What are they called?
step-down transformers