Power in D.C. Circuits
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10 Terms
Power
The energy transferred per unit time, measured in watts (W).
Watts
The unit of power, equivalent to one joule per second (1 W = 1 J/s).
Potential Difference
The difference in electric potential between two points, measured in volts (V).
Current
The flow of electric charge, measured in amperes (A).
P = V × I
Formula for calculating electrical power, where P is power in watts, V is potential difference in volts, and I is current in amperes.
Series Circuit
A circuit in which the current is the same through each resistor.
Parallel Circuit
A circuit in which the voltage is common to each resistor.
Ohm's Law
A law stating the relationship between voltage (V), current (I), and resistance (R), typically expressed as V = I × R.
Power in D.C. Circuits
The calculation of electrical power in direct current circuits, using specific formulas.
P = V²/R
Alternative formula for calculating power, where V is the potential difference and R is the resistance.
Flashcards (24)