Electricity Quest Flashcards
(28 cards)
What are the types of induction?
Temporary induction and permanent induction
What is friction?
Rubbing two materials together causing electrons to transfer
What device can help you determine if an object is charged?
Electroscope
Why do the leaves on the electroscope return to normal when you remove the negatively charged rod?
The electrons would spread out and return to their original position because they are no longer repelling each other.
If you bring a negatively charged rod near an electroscope, why do the leaves of the electroscope move apart?
(due to temporary induction) Electrons go down towards the leaves making them negative casuing them to repel
If you bring a negatively charged rod and touch it to a neutral electroscope, in which directions will the electrons flow?
Rod to electroscope
Why would the metal leaves of the electroscope repel each other when touched with a negatively charged rod?
Electrons from the rod transfer to the electroscope, leaving a negativecharge (the leaves will repel because the same charges will repel)
Why do the leaves stay repelled sometimes but return to their neutral position other times?
After temporary induction, the leaves will go back to their original position, but after conduction, the leaves will stay repelled apart
If you bring a positively charged rod and touch it to a neutral electroscope, which direction will the electrons flow?
Towards the rod to neutralize the charge
Why would the metal leaves of the electroscope repel each other when touched with a positively charged rod?
Electrons will leave the electroscope, leaving it positively charged, causing the leaves to repel
What is induction?
A static charge produced without making contact with a charged object
What happens when you bring a positively charged glass rod near a neutral sphere? Why does this occur?
Electrons are attracted to the side closest to the rod. This occurs because of electrostatic induction
What is grounding and what does it do to charged objects?
Connects a charged object to the earth using a conductor. It neutralizes charged objects
If you take a positively charged electroscope and attach it to the ground, in which direction will the electrons flow?
Electrons will flow from the ground to the electroscope
If you take a negatively charged electroscope and attach it to the ground, in which direction will the electrons flow?
The electrons will flow from the electroscope to the ground
Static electricity
Static electricity is the result of electrons transferring between charged objects
Conduction
Occurs when two objects with different charges come in contact
Induction
a static charge produced without making contact with a charged object
(Temporary induction) What will happen if a negatively charged object is brought to a neutral one?
Negative charge: the near side becomes positive.
Positive charge:the near side becomes negative.
(Temporary induction) What will happen if a positively charged object is brought to a neutral one?
Side of object closest to positive charge will have temporary negative charge
Grounding
Grounding is connecting a charged object to the ground.
- Results in electric charge of an
object being removed
(neutralized)
What will happen if an object is grounded and a charge object is brought near?
the charge will be permanent and neutralized
Electrical Discharge
electrical charges leave an object. This occurs when charges are given a path to escape.
Lightning Rod
A metal rod designed to attract electrical charge (such as lightning) and safely direct it into the ground, preventing damage to buildings or trees.
