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CREATE YOUR IDEAS FOR YOUR FUTURELoading...
Ohm's LawLoading...
by S.ESENDENİZ KALKAN
Teacher
Kadri Saman MTSO Vocational and Technical Anatolian High School
What is Ohm’s Law?
Ohm's Law is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit.
To students of electronics, Ohm's Law (V = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists.
V = I x R
When spelled out, it means voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.
To students of electronics, Ohm's Law (V = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists.
V = I x R
When spelled out, it means voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.
V=I.R
V
I
R
I=V/R
R=V/I
R=V/I
Example 1: Voltage (V) and resistance (R) are known.
V= 12 V
What is the current in the circuit?
V=I.R
I=V/R
= 12/6= 2 A
I=V/R
= 12/6= 2 A
Example 2: Voltage (V) and current (I) are known.
V= 24 V
What is the resistance created by the lamp?
V= I.R
R=V/I
=24/6= 4 Ω
R=V/I
=24/6= 4 Ω