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Electricity. Ohm’s Law. What is Ohm’s Law?. The relationship between Voltage, Amperes and Resistance Online Simulation link. Huh. What is Ohm’s Law?. Ohm’s Law

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## Electricity

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**Electricity**Ohm’s Law**What is Ohm’s Law?**• The relationship between Voltage, Amperes and Resistance • Online Simulation link**Huh**What is Ohm’s Law? • Ohm’s Law • the current (I) passing between two points is inversely proportional to the resistance (R) between them and proportional to the force (V) across the two points**What is Ohm’s Law?**• Ohm’s Law • the current (I) passing between two points is inversely proportional to the resistance (R) between them … • and proportional to the force (V) across the two points. I = ----- R 1 V I V As resistance goes up, current goes down and visa versa! If the volts are increased, so is the current (amps)**Ohm’s Law - explained**• If water pressure (force ) remains the same • and the clog (resistance) gets bigger • the water flow (current) slows down**Ohm’s Law - explained**If the voltage (V) stays the same and resistance (R)increases, then current (I)decreases. V = R I 12 = 6 2 12 = 3 4**Ohm’s Law - explained**• If the clog in the pipe increases, • then the water pressure must increase to keep • The water flow the same.**Ohm’s Law - explained**• If the resistance increases, • then voltage must increase to keep • the current steady. V = I R 24 = 6 4 12 = 3 4**Ohm’s Law Practice**• Volts = 24, Ohms = 3, Amps = ? • Ohms = 5, Amps = 6, Volts = ? • Amps = 2, Volts = 32, Ohms = ?

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