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What is the effect of higher power in a circuit element?
Energy is transferred, converted, or dissipated at a faster rate.
What happens to the brightness of a lightbulb if the power doubles?
The lightbulb becomes significantly brighter.
What happens when electrical energy is transferred?
Electrical energy can turn into heat (thermal energy).
What happens when the resistance increases in a circuit, assuming voltage remains constant?
The power dissipated decreases, according to the formula $P = \frac{\Delta V^2}{R}$.
What happens when the current increases through a resistor?
The power dissipated by the resistor increases, according to the formula $P = I^2 R$.
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: $R_{eq} = \frac{R_3(R_1 + R_2)}{R_3 + R_1 + R_2}$
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.