All Flashcards
What is the difference between power and energy?
Power is the rate of energy use (how fast energy is used), while energy is the total amount used.
Compare a 60-W lightbulb and a 100-W lightbulb in terms of resistance when operating at the same voltage.
The 60-W lightbulb has greater resistance than the 100-W lightbulb.
In a circuit with resistors R1 and R2 in series, and that combination in parallel with R3, what is the equivalent resistance?
The equivalent resistance is given by:
Define electric power.
The rate of energy transfer or conversion in an electrical circuit, measured in watts.
What is current (I)?
The rate of flow of electric charge past a point or region.
What is voltage (ΔV)?
The electric potential difference between two points in a circuit.
Define Resistance (R).
A measure of the opposition to current flow in an electrical circuit.
What is the formula for electric power in terms of current and voltage?
What is the formula for electric power in terms of current and resistance?
What is the formula for electric power in terms of voltage and resistance?