Analyze direct current (DC) circuits instantly. This circuit analysis calculator uses Ohm’s Law and Joule’s Law to determine Voltage, Current, Resistance, and Power based on your inputs.
Circuit Analysis Calculator Formula
Ohm’s Law: $V = I \times R$
Power Law: $P = V \times I$
Derivations: $P = I^2 \times R \quad | \quad P = \frac{V^2}{R}$
Formula Source: All About Circuits – Voltage, Current, and Resistance
Variables:
- Voltage (V): The electrical potential difference between two points, measured in Volts.
- Current (I): The flow of electrical charge through a conductor, measured in Amperes (Amps).
- Resistance (R): The opposition to the flow of current, measured in Ohms ($\Omega$).
- Power (P): The rate at which electrical energy is transferred, measured in Watts.
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What is Circuit Analysis Calculator?
A circuit analysis calculator is a specialized digital tool designed to help engineers, students, and hobbyists solve complex electrical parameters in a DC circuit. By applying fundamental physics laws, it eliminates manual calculation errors and provides instant results for voltage, current, resistance, and wattage.
Whether you are designing a simple LED circuit or analyzing a power supply load, understanding the relationship between these four variables is critical. This calculator handles the algebraic manipulation for you, solving any two missing values as long as two others are provided.
How to Calculate Circuit Analysis (Example)
Suppose you have a 12V battery connected to a resistor, and you measure a current of 0.5A. Here is how to solve the circuit:
- Identify Knowns: Voltage ($V$) = 12V, Current ($I$) = 0.5A.
- Find Resistance ($R$): Use $R = V / I = 12 / 0.5 = 24 \Omega$.
- Find Power ($P$): Use $P = V \times I = 12 \times 0.5 = 6$ Watts.
- Verify: Ensure $P = I^2 \times R = 0.5^2 \times 24 = 0.25 \times 24 = 6$ Watts.
Frequently Asked Questions (FAQ)
Ohm’s Law is the foundation of circuit analysis, stating that the current through a conductor between two points is directly proportional to the voltage across the two points.
This calculator is specifically designed for Direct Current (DC). For Alternating Current (AC), you must account for impedance, phase angles, and reactive power.
The calculator will check for consistency. If the values don’t mathematically align (e.g., $V \neq I \times R$), it will flag a warning to ensure your physical circuit is safe.
Standard SI units: Volts (V), Amperes (A), Ohms ($\Omega$), and Watts (W).