A capacitor is an electrical device that
Measures electrical energy
Stores electric charge
Measure electrical conductivity
Stores electric potential
Which statement explains why will make the balloon stick to a wall?
Rubbing the balloon on your hair creates a temporary magnet.
The balloon gets static charge when rubbed on someone’s hair.
There is glue on the wall
It is a magic trick.
What is the meaning of the term "resistance" as applied to electricity? Resistance is a measure of a material's opposition.
Voltage
Movement of protons
Current
Electric force
As the voltage across the capacitor changes what happens to the capacitor?
There is a direct relationship between the voltage and the charge stored on the capacitor.
The electric potential energy stored in the capacitor changes by the square of the change in voltage.
Both A and B
Neither A nor B
Which of the following is a description of electrical current?
The electric potential between two points in a circuit.
The flow of protons through a material.
The movement of resistance
Electric voltage is a measure of
total amount of current
how much current is moving through a circuit
the ratio of work done moving electric charges
none of these
Why would a comb that had been run through hair touch one cheerio and cause the two Cheerios to come together. The comb had...
a negative charge
a positive charge
a different charge than the Cheerios already had
the same charge as the Cheerios already had
Electric current originates from which part of an atom?
nucleus
negatively charged electrons
positively charged electrons
entire atom acting as a unit
Which form of electric discharge appears in nature?
rain
ocean currents
lightning
volcanoes
How can you tell when static electricity has been discharged?
Heat is released that can be felt.
Light is released and you can feel a shock.
Static electricity gives off many different colors.
The object begins to spin rapidly when it is shocked.
