Voltage Formula:
V: Voltage (V)
I: Current (A)
R: Resistance (Ω)
From: | To: |
Definition: This calculator converts electrical resistance (ohms) and current (amperes) to voltage (volts) using Ohm's Law.
Purpose: It helps electrical engineers, technicians, and students quickly determine voltage in DC circuits.
The calculator uses Ohm's Law formula:
Where:
Explanation: Voltage equals current multiplied by resistance in a DC circuit.
Details: Proper voltage calculation ensures correct circuit design, component selection, and safety in electrical systems.
Tips: Enter the current in amperes and resistance in ohms. Both values must be positive numbers.
Q1: Does this work for AC circuits?
A: This applies to DC circuits. For AC, you need to consider impedance and phase angles.
Q2: What's a typical resistance value?
A: Resistance varies widely by component - from milliohms in wires to megaohms in insulators.
Q3: How precise should my measurements be?
A: For most applications, 2-3 significant figures are sufficient.
Q4: Can I calculate power with this?
A: Not directly, but power (P) can be calculated as P = V × I using the results.
Q5: What if I get negative values?
A: The calculator only accepts positive values as resistance and current can't be negative in this context.