70 likes | 361 Views
Quiz!. Come grab a quarter sheet. You may use notes. What can voltage be compared to in a hose? What does a watt measure? What are a watt’s units?. We know what a watt is, now what is a watt hour? Or, for that matter, what is a kWh? A kilo-Watt hour!
E N D
Quiz! Come grab a quarter sheet
You may use notes • What can voltage be compared to in a hose? • What does a watt measure? • What are a watt’s units?
We know what a watt is, now what is a watt hour? Or, for that matter, what is a kWh? A kilo-Watt hour! Actually, a kWh has the same units as a joule.
Joule: Watt: Watt*second:
A kWh is actually equivalent to Energy companies measure the energy your house uses in kWh.
A Quick Summary A battery puts pressure on electrons in a wire to flow by providing VOLTAGE. The flow of electrons is called CURRENT, measured in COULOMBS per second. Coulombs are a measure of charge. Charges can exert force. The ability to exert force is measured as energy in JOULES. The number of joules of energy passing through a wire per second is a WATT.