Series RL Circuit Concepts

This video tutorial explains how a series RL circuit works by solving a problem to calculate the impedance. The given data includes current and voltages across the resistance and inductor. The instructor draws a voltage triangle to find the applied voltage and its angle. The impedance is calculated by dividing the voltage by the current, and the result is expressed in both polar and rectangular forms. The video concludes with a discussion on resistance and inductive reactance, noting that the frequency is not provided.

What is the current flowing through the series RL circuit in the given problem?

• 3 Amperes

• 5 Amperes

• 7 Amperes

• 9 Amperes

What is the voltage across the resistance in the series RL circuit?

• 14 Volts

• 10 Volts

• 16 Volts

• 12 Volts

How is the applied voltage calculated in a series RL circuit using the voltage triangle?

• By subtracting the voltage across the inductor from the resistor

• By adding the voltages across the resistor and inductor

• By using the Pythagorean theorem on the voltages across the resistor and inductor

• By dividing the voltage across the resistor by the inductor

What is the calculated magnitude of the applied voltage in the series RL circuit?

• 24 Volts

• 22 Volts

• 20 Volts

• 18 Volts

How is the phase angle (Phi) determined in the series RL circuit?

• Using tangent inverse of VL/VR

• Using cosine inverse of VL/VR

• Using sine inverse of VR/VL

• Using cotangent inverse of VR/VL

What is the phase angle (Phi) in degrees for the series RL circuit?

• 40.87 degrees

• 46.87 degrees

• 36.87 degrees

• 30.87 degrees

How is the impedance (Z) of the series RL circuit calculated?

• By multiplying the voltage and current

• By adding the voltage and current

• By dividing the voltage by the current

• By subtracting the current from the voltage

What is the impedance of the series RL circuit in polar form?

• 3 at an angle 30.87 degrees

• 4 at an angle 36.87 degrees

• 5 at an angle 40.87 degrees

• 6 at an angle 46.87 degrees

What is the resistance (R) of the series RL circuit in rectangular form?

• 3.2 Ohms

• 5.2 Ohms

• 4.2 Ohms

• 2.2 Ohms

What is the inductive reactance (XL) of the series RL circuit in rectangular form?

• 1.40 Ohms

• 2.40 Ohms

• 4.40 Ohms

• 3.40 Ohms