Ohm's Law and Circuit Analysis

This video tutorial introduces Ohm's Law, a fundamental principle in electronics that relates voltage, current, and resistance. The video explains the formula V = I * R and its rearrangements to solve for different variables. Through three examples, the tutorial demonstrates how to calculate voltage, current, and resistance in a simple circuit, emphasizing unit conversions and practical applications.

What are the three key quantities unified by Ohm's Law?

• Voltage, Capacitance, and Inductance

• Voltage, Current, and Resistance

• Voltage, Power, and Resistance

• Current, Power, and Capacitance

Which of the following is NOT a permutation of Ohm's Law?

• P = V * I

• V = I * R

• I = V / R

• R = V / I

In the first example, what is the resistance value used?

• 15 ohms

• 10 ohms

• 5 ohms

• 20 ohms

How is 500 milliamps converted to amps in the first example?

• By multiplying by 1000

• By dividing by 1000

• By adding 1000

• By subtracting 1000

In the second example, what is the voltage of the cell?

• 9 volts

• 5 volts

• 12 volts

• 15 volts

What is the resistance value used in the second example?

• 110 ohms

• 130 ohms

• 100 ohms

• 120 ohms

In the second example, what is the current in milliamps?

• 75 milliamps

• 50 milliamps

• 60 milliamps

• 70 milliamps

In the third example, what is the voltage of the cell?

• 15 volts

• 9 volts

• 5 volts

• 12 volts

How is 800 milliamps converted to amps in the third example?

• By multiplying by 1000

• By dividing by 1000

• By adding 1000

• By subtracting 1000

What is the calculated resistance in the third example?

• 18 ohms

• 15 ohms

• 12 ohms

• 10 ohms