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Voltage Drop Formula:
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The voltage drop across a resistor refers to the reduction in electrical potential that occurs when current flows through a resistor in an electrical circuit, as described by Ohm's Law.
The calculator uses Ohm's Law formula:
Where:
Explanation: The voltage drop is directly proportional to both the current flowing through the resistor and the resistance value.
Details: Calculating voltage drop is essential for circuit design, ensuring proper component operation, preventing damage to electronic components, and maintaining desired voltage levels throughout a circuit.
Tips: Enter current in amperes (A) and resistance in ohms (Ω). Both values must be positive numbers greater than zero.
Q1: What is Ohm's Law?
A: 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.
Q2: Why does voltage drop occur across resistors?
A: Voltage drop occurs because resistors convert electrical energy into heat energy, causing a reduction in electrical potential as current flows through them.
Q3: How does voltage drop affect circuit performance?
A: Excessive voltage drop can lead to insufficient voltage for proper component operation, reduced efficiency, and potential malfunction of electronic devices.
Q4: Can voltage drop be negative?
A: In DC circuits, voltage drop is always positive in the direction of current flow. In AC circuits, it can be represented with phase angles.
Q5: How is voltage drop different from voltage source?
A: Voltage source provides electrical potential energy, while voltage drop represents the consumption of that energy as current flows through circuit components.