Ohm’s law IES Lloixa Technologies Department
The relationship between Voltage, Current and Resistance in any DC electrical circuit was
firstly discovered by the German physicist Georg Ohm, (1787 - 1854).
Georg Ohm found
that, at a constant temperature, the...
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Ohm’s law IES Lloixa Technologies Department
The relationship between Voltage, Current and Resistance in any DC electrical circuit was
firstly discovered by the German physicist Georg Ohm, (1787 - 1854).
Georg Ohm found
that, at a constant temperature, the electrical current flowing through a fixed linear
resistance is directly proportional to the voltage applied across it, and also inversely
proportional to the resistance.
This relationship between the Voltage, Current and
Resistance forms the bases of Ohms Law and is shown below.
Ohms Law Relationship
By knowing any two values of the Voltage, Current or Resistance quantities we can use
Ohms Law to find the third missing value.
Ohms Law is used extensively in electronics
formulas and calculations so it is "very important to understand and accurately remember
these formulas".
To find Voltage (V)
[V = I x R]
V (volts) = I (amps) x R (Ω)
To find Current (I)
[I = V ÷ R]
I (amps) = V (volts) ÷ R (Ω)
To find Resistance (R)
It is someti
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