ohm's law (george Simon ohm)
Answers
Explanation:
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ohms law
In this algebraic expression, voltage (E) is equal to current
(I) multiplied by resistance (R). Using algebra techniques, we can manipulate this equation into two variations, solving for I and for R, respectively:
ohms equation current resistance
- Analyzing Simple Circuits with Ohm’s Law
- Let’s see how these equations might work to help us analyze simple circuits:
current flow ohms law
In the above circuit, there is only one source of voltage (the battery, on the left) and only one source of resistance to current (the lamp, on the right). This makes it very easy to apply Ohm’s Law. If we know the values of any two of the three quantities (voltage, current, and resistance) in this circuit, we can use Ohm’s Law to determine the third.
In this first example
, we will calculate the amount of current (I) in a circuit, given values of voltage (E) and resistance (R):
current flow ER
What is the amount of current (I) in this circuit?
current flow equation circuit
In this second example, we will calculate the amount of resistance (R) in a circuit, given values of voltage (E) and current (I):
current flow resistance
What is the amount of resistance (R) offered by the lamp?
current flow resistance equation
In the last example, we will calculate the amount of voltage supplied by a battery, given values of current (I) and resistance (R):
current flow voltage battery
What is the amount of voltage provided by the battery?
current-flow voltage battery equation