Please enable JavaScript.
Coggle requires JavaScript to display documents.
PHYSICS (series (voltage drop across each load must add up to total…
PHYSICS
-
Power
-
-
-
to determine t if given hours, multiply by 3600 (there are 3600 seconds in one hour)
EnergyGuide: tells you Kw h (kilowatt hours) per year.(Kwh) to compare two appliances: work out Kwh per year (multiply the total Kwh given by the cost (usually in cents/h) and then multiply by the # of years. Do for both appliances and subtract, as needed.
-
Mixed Circuits
Work out the individual circuits and add them together';figure out what you already know and what you need to know
if you need to find the total resistance: add the resistance in the series circuits; use the 1/R equation to work out the total resistance in the // circuit. Add together. Use this value in OHMs law to work out total current or total voltage, whichever is needed
If you need to work out voltage drop: remember the rules - in series - each load uses a portion of the voltage. in // the voltage drop will be the same across each pathway.
watch for when there are two resistors on one path of a // pathway - these two resistors are in series (and therefor share the voltage drop across the pathway).
to find the current in a branch of a // circuit: find the total resistance in that parallel section (current is divided up between the branches); the voltage drop will be the same across each branch; use OHMs law to work out the current.
-