Electricity Flashcards
Which way do electrons flow through a battery?
Why?
Electrons flow from the negative end of the battery to the positive end
Electrons are negatively charged and are attracted to positive charges
The cathode is the ______ electrode
The anode is the _______ electrode
Positive
Negative
What is the difference between a primary and secondary cell?
A primary cell can only be used once
Secondary cells are rechargeable
What does an ammeter measure?
Electrical current measured in amperes
Power is measured in _____
Watts (joules per second)
Neutrally charged objects are attracted to ______ charged objects
Positively
What is ionization?
Neutral atoms become charged by loss or gain of electrons
What is the load on a circuit?
Item that converts energy (e.g. light bulb)
Good conductors have ______ resistance
Poor conductors have ______ resistance
Low
High
Electromagnets - increase amount of coils = _____ magnet, increase voltage = _____ magnet
Stronger, stronger
Movement _______ to conductor induces a current
Perpendicular
Potential energy is _____________
Kinetic energy is of ____________
Stored energy
Moving objects
