Home › HSC (New South Wales) › Physics › Electrical Circuits › Which statement is true regarding capacitors and…
Which statement is true regarding capacitors and electric power dissipation in a circuit?
ACapacitors dissipate more electric power than resistors of the same value
BCapacitors dissipate electric power only when fully charged
CCapacitors and resistors dissipate exactly the same amount of power
DCapacitors do not dissipate electric power; only resistances do
Answer & Solution
Correct answer: D. Capacitors do not dissipate electric power; only resistances do
1. Electric power dissipation in a circuit is tied specifically to resistance.
2. It is explicitly stated that capacitors do not dissipate electric power.
3. Instead, capacitors either store electric energy or release it back to the circuit, rather than dissipating it as resistors do.
4. So the correct statement is that only resistances, not capacitors, dissipate electric power.
_Source: OpenStax Physics (CC BY 4.0), Ch 19 "Electrical Circuits", section 19.4 Electric Power_
Related questions
Three 10 ohm resistors are connected in parallel across a 9.0 V battery. What power is disIn that same six-resistor circuit, the middle branch dissipates 2.4 W, the left branch disSix 30 ohm resistors are wired into three branches connected in parallel across a 12 V batA single 9-V alkaline battery can deliver a charge of 565 mA h. Two of these batteries areYou want 10 W of heat output from a resistor heater powered by two 9-V batteries connectedHousehold outlets in many countries supply 120 V AC. What does it mean that this 120 V figAn older incandescent light bulb is rated at 60 W and operates at 120 V. What current flowA 25-W light bulb and a 60-W light bulb both operate at the same voltage. Which bulb has t