simple circuit and ohms law
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Simple Circuit and Ohms Law
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Simple Circuit & Ohm's Law
Define and draw a simple circuit.
Objectives
Define electric current, voltage and resistance and state the metric units.
State Ohm’s law using words and a formula.
Complete Circuit?
Simple Circuit
Resistance (R)measures opposition to flow of charge
Unit: Ohms
qtI =
Current (I)rate.... measurement how much charge per second through a circuit at once.
Unit: charge/second
Ampsor
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Simple Circuit and Ohms Law
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Potential Difference (V)measures energy/charge
determined by battery
PEqV =
Unit: Volts (V)
VR
I =
Ohms Law
relationship between electrical current, resistance & voltage
Circuit Schematic Notation
Battery:Wire:12 V
+ _ 1 ΩResistor: 2 Ω
6 V+ _
Ohms Law
2 Ω
6 V+ _
3 A
Ohms Law Assignments . . .
Begin Chapter 15 Homework #1 4