ohms law

volts or E

R•I=

volts or E

P/I=

volts or E

√P•R=

resistance or R

E/I=

resistance or R

E²/P=

resistance or R

P/I²=

amperes or I

E/R=

amperes or I

P/E=

amperes or I

√P/R=

Watts or P

E•I=

watts or P

R•I²=

watts or P

E²/R=

I=E/R

R=E/I

E=I•R

P=I•E

What are the 4 main equations that let you calculate amps, ohms, volts, and watts?

Add up the current in all the branches

To find current in a parallel circuit you…

the voltage is the same across the entire circuit.

To find the total voltage in a parallel circuit you…

Divide the total voltage by the total current

To find the total ohms of resistance in a parallel circuit you…

The current is equal everywhere in the circuit

To find amperes in a series circuit you…

find the sum of all the voltages in each part of the circuit

To find the total voltage in a series circuit you…

Add all the resistance in the entire circuit

To find the total ohms in a series circuit you…

A combination of series and parallel so you can get the voltage of a series circuit while also getting the current of a parallel

A combination circuit is…

P•hours. The amount if watts you use over time

KWH kilowatts per hour is…

The battery life. For example a 2 amp hour battery can supply 2 amps for 1 hour

amp hours =

4 hours

A 2 amp hour battery can provide 500 milliamps for…

1/Resistor1 + 1/resistor2 + 1/resistor3… and so on

What is a formula that could help you calculate total resistance in a parallel circuit if the total voltage or total current is missing?

What is a formula that could help you calculate total resistance in a parallel circuit if you are not given total amps or total voltage

R1•R2/R1+R2

Amp hour•V

Watt hour in a battery calculated…

180 amps for 2 minutes but if you draw more amps or for more time the battery could get seriously damaged.and no this does not mean 360 for 1 min unless the battery is specifically rated for 60C bursts. (I checked this theory with AI)

A 6 amp hour 30C 9 volt battery can provide a maximum amperes of… for … minutes. (Hint divide 60 by C to get maximum time it can run for then take the C and multiply it by the amp hour to get the maximum amps it can provide)