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Definition: This calculator computes the electrical current in amperes based on power in watts and voltage in volts.
Purpose: It helps electricians, engineers, and DIY enthusiasts determine the current flow in electrical circuits.
The calculator uses the formula:
Where:
Explanation: The power is divided by voltage to calculate the current flowing through the circuit.
Details: Proper current calculation ensures correct wire sizing, circuit breaker selection, and overall electrical safety.
Tips: Enter the power in watts and voltage in volts. Both values must be > 0 for accurate calculation.
Q1: What if I know current and want to find power?
A: Rearrange the formula: \( P = I \times V \). Multiply current by voltage to get power.
Q2: Does this work for both AC and DC circuits?
A: For DC and AC resistive loads, yes. For AC reactive loads, power factor must be considered.
Q3: What's a typical household voltage?
A: In North America, 120V for standard outlets, 240V for large appliances. Europe typically uses 230V.
Q4: How do I measure power and voltage?
A: Use a wattmeter for power and a voltmeter for voltage measurements.
Q5: What safety precautions should I take?
A: Always turn off power before working on circuits and consult a licensed electrician for complex projects.