16.3 OHMS LAW.

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Ohm's law magic triangle

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Presentation transcript:

16.3 OHMS LAW

Ohms Law Ohm’s Law explains the relationship between current, resistance, and voltage. Used by electricians, automotive technicians, stereo installers

Current Current refers to the quantity/volume of electrical flow. Symbol: I Measured in Amps (A)

Resistance (R) Resistance to the flow of the current. Symbol: Ω Measured in Ohms

Voltage It is the push or pressure behind current flow through a circuit Symbol: V Measured in Volts

Symbol Chart

How do we used Ohm’s law V = I x R V = Voltage I = Current R = Resistance

Ohm’s Law Formula’s V = I x R (Solving for Voltage) I = V / R (Solving for Current) R = V / I (Solving for Resistance)

Ohm’s Law Example #1 A battery has a voltage of 12-V with a resistance of 2-Ω. What is the Current in amps?

Ohm’s Law Example #2 If the Voltage of a power supply 12-V and can supply 4 amps, what is the resistance in Ohm’s?

How do we measure? Multi-Meter