79. Which of the following formulas can be used with Ohm's law to determine the amount of voltage necessary to push ampere of current through ohms of resistance? a. E=IXR b. C. d. E = 0.8 AX 6 E = 4.8 V X₁ = 2 π fL 1 = E XL X₁₁=X₁₁ + X₁₂ + X₁3

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**Transcription for Educational Website:**

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**Physics and Electrical Engineering Practice Questions**

**Question 79:**
Which of the following formulas can be used with Ohm's law to determine the amount of voltage necessary to push 1 ampere of current through ohms of resistance?
- \( a. \quad E = I \times R \)  
  \( \quad \quad \quad \text{I = 0.8 A} \)  
  \( \quad \quad \quad \text{E = 4.8 V} \)

- \( b. \quad X_L = 2 \pi f L \)

- \( c. \quad I = \frac{E}{X_L} \)

- \( d. \quad X_T = X_1 + X_2 + X_3 \)

**Question 80:**
A ceiling fan has a light kit attached to the fan. What type of load is the light kit?
- \( a. \quad \text{power} \)
- \( b. \quad \text{capacitive} \)

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**Explanation of Terms and Diagrams:**

- **Ohm’s Law Formula:** Ohm’s law is essential for calculating electrical quantities. The formula \( E = I \times R \) (where E is voltage, I is current, and R is resistance) is commonly used to find one of these values when the other two are known.

- **Inductive Reactance Formula (\( X_L = 2 \pi f L \)):** This formula is used to calculate the inductive reactance in an AC circuit, where \( f \) is the frequency and \( L \) is the inductance.

- **Formula for Total Reactance (\( X_T = X_1 + X_2 + X_3 \)):** This is used to calculate the total reactance in circuits that have multiple reactances in series.

- **Types of Loads:** In electrical circuits, loads can be categorized based on their characteristics, such as power loads or capacitive loads. A power load is typically resistive, consuming power in the form of heat or light.

These problems assist students in applying theoretical concepts to practical scenarios in electrical circuits, fostering a deeper understanding of fundamental principles used in physics and engineering.

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Transcribed Image Text:**Transcription for Educational Website:** --- **Physics and Electrical Engineering Practice Questions** **Question 79:** Which of the following formulas can be used with Ohm's law to determine the amount of voltage necessary to push 1 ampere of current through ohms of resistance? - \( a. \quad E = I \times R \) \( \quad \quad \quad \text{I = 0.8 A} \) \( \quad \quad \quad \text{E = 4.8 V} \) - \( b. \quad X_L = 2 \pi f L \) - \( c. \quad I = \frac{E}{X_L} \) - \( d. \quad X_T = X_1 + X_2 + X_3 \) **Question 80:** A ceiling fan has a light kit attached to the fan. What type of load is the light kit? - \( a. \quad \text{power} \) - \( b. \quad \text{capacitive} \) --- **Explanation of Terms and Diagrams:** - **Ohm’s Law Formula:** Ohm’s law is essential for calculating electrical quantities. The formula \( E = I \times R \) (where E is voltage, I is current, and R is resistance) is commonly used to find one of these values when the other two are known. - **Inductive Reactance Formula (\( X_L = 2 \pi f L \)):** This formula is used to calculate the inductive reactance in an AC circuit, where \( f \) is the frequency and \( L \) is the inductance. - **Formula for Total Reactance (\( X_T = X_1 + X_2 + X_3 \)):** This is used to calculate the total reactance in circuits that have multiple reactances in series. - **Types of Loads:** In electrical circuits, loads can be categorized based on their characteristics, such as power loads or capacitive loads. A power load is typically resistive, consuming power in the form of heat or light. These problems assist students in applying theoretical concepts to practical scenarios in electrical circuits, fostering a deeper understanding of fundamental principles used in physics and engineering. ---
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