Charge
Voltage
Current
Resistance
Ohm's Law
100
What are negative charges attracted to?
Positive charges.
100
What is the unit for electric potential?
Volts
100
What is the unit of measure for current?
Amperes
100
What is the unit of measure for Resistance?
Ohms.
100
What is the equation for Ohm's Law?
V=IR
200
What kind of charge is on a proton?
Positive charge.
200
How is electric potential different from potential energy?
Electric potential is potential energy per unit charge.
200
What is current?
The rate of charge flow.
200
How do resistors generally dissipate energy?
As heat.
200
What potential is required to push 2.5A through 100 Ohms of resistance?
250 Volts
300
What is the unit of measure of charge?
Coulombs.
300
What is the potential energy of a 3C charge at a potential of 9 volts?
27 Joules
300
How much charge flow through a circuit in 3 seconds, if it has a current of 4 Amperes?
12 Coulombs
300
Which has greater resistance: Conductors or insulators?
Insulators
300
What current is produced when 110V is placed across 20 Ohms.
5.5 Amperes
400
What is the charge on an electron?
-1.602E-19
400
A 2C charge with a potential energy of 0.5 J is at what electric potential?
0.25 Volts
400
What is the current in a circuit if 8 Coulombs flows in 40 seconds?
0.2 Amperes
400
What is a semiconductor?
A material that conducts better than an insulator, but not as well as a conductor.
400
What resistance is required to produce a current of 3 A across 9V?
3 Ohms
500
What is the charge on a carbon nucleus (6 protons)?
9.612E-19
500
How much energy can one electron give up by dropping its potential 110 volts?
1.76E-17 Joules
500
How long does it take for 12 Coulombs to flow through a circuit with a current of 6 Amperes?
2 Seconds.
500
Why is a light bulb most likely to burn out when it is first turned on?
The resistance of the bulb is low at first, allowing high current. The resistance rises as the bulb heats up.
500
What happens to the current through a circuit if the potential is held steady, and the resistance is tripled?
The current is divided by three.
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