State the relationship between voltage, current and resistance.
Question
State the relationship between voltage, current and resistance.
Solution
The relationship between voltage, current, and resistance is described by Ohm's Law. Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them. This is usually written as V=IR, where V is the voltage, I is the current, and R is the resistance.
Here are the steps to understand this relationship:
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Voltage: This is the electrical force that would drive an electric current between two points. It's measured in volts (V).
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Current: This is the rate at which electric charge flows past a point in a circuit. The unit of current is the Ampere (A).
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Resistance: This is a material's opposition to the flow of electric current. It's measured in ohms (Ω).
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Ohm's Law (V=IR): This law states that the voltage (V) across a resistor is proportional to the current (I) through it, where the constant of proportionality is the resistance (R).
So, if you know any two of the values (V, I, R), you can solve for the third. For example, if you know the voltage (V) and resistance (R), you can find the current (I) by rearranging the formula to I = V/R.
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