Quizzes · Knowledge
Ohm's Law and Simple Electric Circuits: Multiple Choice
Preview · 12 questions
- 01Ohm's Law describes the relationship between which three fundamental electrical quantities?
- 02The opposition to the flow of electric current is known as resistance. What is its standard unit?
- 03Electrical power (P) is the rate at which electrical energy is transferred. What is its standard unit?
- 04What is the standard unit of measurement for electric current?
- 05In a circuit with constant resistance, if you double the voltage, what happens to the current?
- 06If you add more light bulbs to a simple series circuit, what happens to the brightness of the existing bulbs?
- 07A 12-volt battery is connected to a resistor, and a current of 3 amperes flows. What is the resistance of the resistor?
- 08In a series circuit, which of the following quantities is the same through all components?
- 09In a parallel circuit, which of the following quantities is the same across all branches?
- 10How is the total resistance (R_total) of three resistors (R1, R2, R3) connected in series calculated?
- 11What is the total equivalent resistance of two 20-ohm resistors connected in parallel?
- 12Conversely, if you add more light bulbs to a simple parallel circuit, what happens to the brightness of the existing bulbs (assuming an ideal power source)?