Final answer:
In electrical circuits, the symbol 'I' represents current, which is the flow of electric charge. Power is dissipated by resistors, and to increase power dissipation with constant current, resistance should be reduced.
Step-by-step explanation:
When analyzing an electrical circuit, the symbol I typically represents current. Current is the flow of electric charge through a conductor and is measured in amperes. It is one of the basic properties of a circuit, along with voltage and resistance.
Regarding circuit elements that dissipate power, the correct answer is d. resistors. Resistors convert electrical energy into heat, thus dissipating power within a circuit. Conversely, elements like capacitors do not dissipate power; instead, they store and release electric energy.
To increase the power dissipated in a circuit, with the current remaining constant, one should b. reduce the resistance. According to Ohm's law and the power equation P = IV (where P stands for power, I for current, and V for voltage), reducing resistance while keeping current constant will result in higher power dissipation.