Which statement about electric charges is correct?(1 point)
Responses
Two objects with negative charges will attract each other.
Two objects with negative charges will attract each other.
An object with a negative charge and an object with a positive charge will attract each other.
An object with a negative charge and an object with a positive charge will attract each other.
Two objects with positive charges will attract each other.
Two objects with positive charges will attract each other.
An object with a positive charge and an object with a negative charge will repel each other.
An object with a negative charge and an object with a positive charge will attract each other.
Sally puts on wool socks and rubs her feet on a nylon carpet. How does static electricity build up in Sally?(1 point)
Responses
Electrons from the wool socks move into the carpet, giving Sally and her socks a positive charge.
Electrons from the wool socks move into the carpet, giving Sally and her socks a positive charge.
When electrons from the wool socks move into the carpet, Sally and her socks gain a negative charge.
When electrons from the wool socks move into the carpet, Sally and her socks gain a negative charge.
Electrons from the carpet move into the wool socks, giving Sally and her socks a positive charge.
Electrons from the carpet move into the wool socks, giving Sally and her socks a positive charge.
The friction causes electrons from the wool socks to move to Sally, giving Sally a negative charge.
When electrons from the wool socks move into the carpet, giving Sally and her socks a positive charge.
The resistance in a circuit is halved. What happens to the voltage?
V=IR
(1 point)
Responses
The voltage is halved.
The voltage is halved.
The voltage is doubled.
The voltage is doubled.
The voltage is increased by a factor of 4.
The voltage is increased by a factor of 4.
The voltage remains the same.
The voltage is doubled.
How does a flashlight illustrate the Law of Conservation of Energy? (1 point)
Responses
Potential energy in the battery will be converted to kinetic energy.
Potential energy in the battery will be converted to kinetic energy.
All of the electrical energy leaving the battery will travel through the circuit and return to the battery.
All of the electrical energy leaving the battery will travel through the circuit and return to the battery.
It is an electric circuit through which electrical energy flows.
It is an electric circuit through which electrical energy flows.
Potential chemical energy in the battery is converted to electrical energy, which is converted to light energy and heat energy.