PHYS 165- EXAM 7
A impartial rubber rod is rubbed with a piece of neutral wool. As a result, the rubber rod has a
bad charge snd the wool has a tremendous charge. Explain how they have become charged -
ANS-When the rod is rubbed with wool, electrons are scraped off the wool onto the rod. This
makes the rod have greater electrons than protons, and the wool now has fewer electrons than
protons
Describe how an electroscope detects an electric fee - ANS-When a fee is brought close to an
electroscope, electrons flow either in the direction of the charged item or away relying on its fee.
This will make the leaves of the electroscope each have the same charge and they will repel
each different. As a result, the leaves will upward push.
If an atom has an identical amount of protons and electrons, what's its net price - ANS-0
If you increase the voltage throughout a set capacitor, what else will alternate? - ANS-the rate
on the plates will growth
Two objects have a internet fee and are near every other. What 3 things may be performed to
boom the force between the 2 fees? - ANS-1.) increase the net price of the primary item
2.) boom the internet price of the second one item
three.) pass the fees toward every other
Two gadgets have a net electric powered fee and are near each other. What determines if they
may entice each different or repel? - ANS-If the 2 costs are the equal sign, they'll repel each
other. If they're contrary symptoms, they may attract each other
Two spheres with net expenses of +2 and -eight collide, then they quick fly far from every other.
Why? - ANS-The originally attract because they're opposite charged. Since they are conductors,
their fees will transfer until they have the equal charge. They will repel every different when you
consider that they now have the identical rate
What do you name a location of space wherein a charged item can revel in an electric
pressure? - ANS-an electric subject
What is static energy? - ANS-The look at of prices at rest
What is the fee of electrons? - ANS-poor
What is the price of neutrons? - ANS-no rate
What is the rate of protons? - ANS-positive
What is the name of the device that stores electric powered price? - ANS-capacitor or leyden jar
What is the net rate on a capacitor? - ANS-Zero, although there is fee saved in the capacitor.
This is because one plate has a fine rate and the opposite has a terrible rate
What is the connection between electric powered ability energy and electric capability
difference? - ANS-Electric ability distinction is the exchange inside the electric powered ability
power of a fee shifting in an electric field divided by the price of the object transferring
What 3 things can be done to increase the capacitance of a variable capacitor - ANS-1.) incr the
area of the plates
A impartial rubber rod is rubbed with a piece of neutral wool. As a result, the rubber rod has a
bad charge snd the wool has a tremendous charge. Explain how they have become charged -
ANS-When the rod is rubbed with wool, electrons are scraped off the wool onto the rod. This
makes the rod have greater electrons than protons, and the wool now has fewer electrons than
protons
Describe how an electroscope detects an electric fee - ANS-When a fee is brought close to an
electroscope, electrons flow either in the direction of the charged item or away relying on its fee.
This will make the leaves of the electroscope each have the same charge and they will repel
each different. As a result, the leaves will upward push.
If an atom has an identical amount of protons and electrons, what's its net price - ANS-0
If you increase the voltage throughout a set capacitor, what else will alternate? - ANS-the rate
on the plates will growth
Two objects have a internet fee and are near every other. What 3 things may be performed to
boom the force between the 2 fees? - ANS-1.) increase the net price of the primary item
2.) boom the internet price of the second one item
three.) pass the fees toward every other
Two gadgets have a net electric powered fee and are near each other. What determines if they
may entice each different or repel? - ANS-If the 2 costs are the equal sign, they'll repel each
other. If they're contrary symptoms, they may attract each other
Two spheres with net expenses of +2 and -eight collide, then they quick fly far from every other.
Why? - ANS-The originally attract because they're opposite charged. Since they are conductors,
their fees will transfer until they have the equal charge. They will repel every different when you
consider that they now have the identical rate
What do you name a location of space wherein a charged item can revel in an electric
pressure? - ANS-an electric subject
What is static energy? - ANS-The look at of prices at rest
What is the fee of electrons? - ANS-poor
What is the price of neutrons? - ANS-no rate
What is the rate of protons? - ANS-positive
What is the name of the device that stores electric powered price? - ANS-capacitor or leyden jar
What is the net rate on a capacitor? - ANS-Zero, although there is fee saved in the capacitor.
This is because one plate has a fine rate and the opposite has a terrible rate
What is the connection between electric powered ability energy and electric capability
difference? - ANS-Electric ability distinction is the exchange inside the electric powered ability
power of a fee shifting in an electric field divided by the price of the object transferring
What 3 things can be done to increase the capacitance of a variable capacitor - ANS-1.) incr the
area of the plates
