Science Ch 7 Test Flashcards
Is a circuit with only one path for current to follow
Series circuit
An accumulation of excess electric charge is
Static electricity
The electric force that makes current flow in a circuit is related to the
Voltage difference
According to ______ the electric charge cannot be created or destroyed.
Law of conservation of charge
This is the result of electrons colliding with atoms as current flows in a material
Resistance
Charging a balloon by rubbing it on wool is an example of
Charging by contact
Which of the following is a conductor
Glass
Wood
Tungsten
Plastic
Tungsten
Resistance in wires causes electrical energy to be converted Resistance in wires causes electrical energy to be converted into which form of energy
Chemical energy
Nuclear energy
Thermal energy
Sound
Thermal energy
The electric force between two charged objects depends on
Which of the following
Their masses and their separation
Their speeds
Their charge and their separation
Their masses and their charge
Their charge and their separation
A commonly used unit for electrical energy is which of the following
Kilowatt-hour
Ampere
Ohm
Elton
Kilowatt- hour
An object becomes positively charged when which of the following occurs
Loses electrons
Loses protons
Gains neutrons
Gains neutrons
Loses electrons
Which of the following does NOT provide a voltage difference in a circuit
Wet cell
Wires
Electrical outlet
Dry cell
Wires
Which of the following is the rate at which appliances use electrical energy
Power
Speed
Resistance
Speed
Power
