Resistors and Capacitors

Mr. Anderson explains the essentials of resistors and capacitors in circuits, using a water flow analogy to illustrate how circuits work. He discusses the characteristics of good resistors and capacitors, focusing on material and geometry. Practical examples and simulations demonstrate how resistors and capacitors affect current and voltage in circuits. The video also covers calculations for current using Ohm's law and charge on capacitors, emphasizing the relationships between resistance, capacitance, and circuit performance.

What analogy is used to explain how a circuit works?

• A flowing river

• A water pump

• A spinning wheel

• A moving car

Which factor does NOT affect the resistance of a resistor?

• Material resistivity

• Length of the resistor

• Color of the resistor

• Cross-sectional area

How does increasing the length of a resistor affect its resistance?

• Doubles the resistance

• Has no effect

• Increases resistance

• Decreases resistance

What is the role of the dielectric in a capacitor?

• It decreases capacitance

• It stores electrical energy

• It increases capacitance

• It has no effect on capacitance

What happens to the capacitance when the separation between capacitor plates is decreased?

• Capacitance doubles

• Capacitance decreases

• Capacitance increases

• Capacitance remains the same

Which of the following is true about resistors and capacitors?

• Resistors store energy, capacitors resist flow

• Resistors resist flow, capacitors store energy

• Both resistors and capacitors store energy

• Both resistors and capacitors resist flow

What is the relationship between capacitance and charge in a capacitor?

• Capacitance is inversely proportional to charge

• Capacitance is equal to charge

• Capacitance is directly proportional to charge

• Capacitance has no relation to charge