ohms law

1. Ohm’s Law
- What is Ohm’s Law
- Ohm’s Triangle
- How to find Voltage
- How to find Resistance
- How to find Current
BTVTED-
COMPRO1
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2. WHAT IS OHM’S LAW?
A relationship between voltage, current
and resistance
Developed by German physicist named Georg
Ohm

3. Three formulas used for Ohms
Law
Voltage (V) = Current (I) x Resistance
(R)
Current (I) = Voltage (V) ÷ Resistance
(R)
Resistance (R) = Voltage (V) ÷ Current
(I)

4. Ohm’s Triangle

5. To find voltage
V = I x R
Voltage (V) = Current (I) x
Resistance (R)
OHM’S LAW EXPLAINED

6. To find current
I = V ÷ R
Current (I) = Voltage (V) ÷
Resistance (R)
OHM’S LAW EXPLAINED

7. To find resistance
R = V ÷ I
Resistance (R) = Voltage (V) ÷
Current (I)
OHM’S LAW EXPLAINED

8. SOME EXAMPLES
V = I x R
V = 2A X
3Ω
V = 6
To find voltage…

9. SOME EXAMPLES
I = V ÷ R
To find current
Current = Voltage ÷ Resistance
I = V ÷ R
I = 6V ÷ 3Ω
I = 2A

10. SOME EXAMPLES
R= V ÷ I
To find
resistance
Resistance = Voltage ÷ Current
R = 12V ÷ 0.5A
R = 24Ω