When an atom has an equal number of protons and electrons, the charge of the atom is?
neutral
100
The unit of current is the
amp.
100
The buildup of charges on an object is called ______________.
static electricity
100
In a parallel circuit, there are several paths for the current to take.
True
100
A ________ prevents fires and protects devices from damage caused by high current?
fuse
200
The third prong of an appliance is connected to?
the ground
200
The difference in electrical potential energy between two places is called?
voltage
200
A(n) _____________, such as a battery, creates a potential energy different in a circuit.
voltage source
200
Voltage causes current in an electric circuit.
True
200
If a circuit breaker goes out what do you do?
Pull back a switch
300
What is a substance that conducts electric current in an electrochemical cell?
electrolyte
300
What extends around a charged object?
electric current
300
In a(n) __________ circuit, there is only one path for the current to take.
series
300
A circuit breaker is a safety device that contains a thin strip of metal that melts if there is too much current through it.
False, fuse
300
What could happen to a person if a high current goes through them?
It could be fatal to the person.
400
Charges flow from?
places of higher electrical potential energy to places of lower electrical potential energy
400
In a series circuit, if more light bulbs are added, the bulbs become
dimmer
400
A connection that allows current to take the path of least resistance is a(n) __________.
short circuit
400
Electric current is the attraction or repulsion between electric charges.
False, force
400
What is added to circuits to prevent overheating?
fuses and circuits breakers
500
According to Ohm's law, if there is a contant current in a circuit and the voltage increases, resistance
stays the same.
500
If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 , what is the voltage difference across the light bulb?
20 V
500
A(n) ________ is a reusable safety switch that breaks the circuit when the current gets too high.
circuit breaker
500
A voltmeter is a combination of two or more electrochemical cells in a series.
False, battery
500
What is the difference between a parallel circuit and a series circuit? give an example of each.
Parallel circuits have more than one path and series circuits have only one path.