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Question-1. What is Ohm's Law?

Answer-1: Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it, given a constant temperature.

Question-2. Why it is called Ohm's law?

Answer-2: It is called Ohm's law because it was discovered by the German physicist Georg Simon Ohm.

Question-3. What is the mathematical formula for Ohm's Law?

Answer-3: The mathematical formula for Ohm's Law is V = I * R, where V represents voltage, I represents current, and R represents resistance.

Question-4. How is resistance related to current and voltage according to Ohm's Law?

Answer-4: According to Ohm's Law Resistance is directly proportional to voltage and inversely proportional to current.

Question-5. What is the relationship between voltage and current in Ohm's Law?

Answer-5: According to Ohm's Law, voltage and current are directly proportional. This means that as voltage increases, current increases, and vice versa, as long as resistance remains constant.

Question-6. What is the relationship between current and resistance in Ohm's Law?

Answer-6: According to Ohm's Law, current and resistance are inversely proportional. This means that as resistance increases, current decreases, and vice versa, as long as voltage remains constant.

Question-7. How is Ohm's Law used in circuit analysis?

Answer-7: Ohm's Law is used in circuit analysis to calculate unknown values, such as voltage, current, or resistance, when the other two values are known.

Question-8. In which units is resistance typically measured?

Answer-8: Resistance is typically measured in ohms (Ω).

Question-9. Can resistance be negative according to Ohm's Law? Why or why not?

Answer-9: No, resistance cannot be negative according to Ohm's Law because it represents the opposition to the flow of electric current and cannot have negative physical significance.

Question-10. What is the difference between AC and DC circuits in terms of Ohm's Law?

Answer-10: In terms of Ohm's Law, AC (alternating current) circuits and DC (direct current) circuits follow the same principles. However, AC circuits involve time-varying voltages, while DC circuits have constant voltages.

Question-11. How does temperature affect resistance in Ohm's Law?

Answer-11: Temperature affects resistance in Ohm's Law. As the temperature increases, the resistance of a conductor also increases.

Question-12. What is the difference between a conductor and an insulator in terms of Ohm's Law?

Answer-12: Conductors have low resistance and allow the flow of electric current, while insulators have high resistance and impede the flow of electric current.

Question-13. Can you use Ohm's Law to calculate power in a circuit? If so, how?

Answer-13: Yes, power (P) in a circuit can be calculated using the formula P=VI, where V is voltage and I is current. Alternatively, using Ohm's Law, P=I^{2}R or P=V^{2}/R.

Question-14. What is the difference between parallel and series circuits in terms of Ohm's Law?

Answer-14: In a parallel circuit, the voltage across each branch is the same, while in a series circuit, the total voltage is divided among the components. Ohm's Law can be applied to calculate current and resistance in both types of circuits.

Question-15. Describe the graphical representation of Ohm's Law.

Answer-15: The graphical representation of Ohm's Law is a straight line when voltage is plotted against current, with the slope of the line representing the resistance.

Question-16. Can Ohm's Law be applied to non-linear devices? Why or why not?

Answer-16: No, Ohm's Law cannot be directly applied to non-linear devices because their resistance changes with voltage or current.

Question-17. How does the resistance of a conductor vary with its length and cross-sectional area according to Oh

Answer-17: According to Ohm's Law, the resistance of a conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

Question-18. How can Ohm's Law be applied to real-world circuits and systems?

Answer-18: Ohm's Law can be applied to real-world circuits and systems to design electrical devices, calculate power consumption, analyze electrical faults, and optimize circuit performance.

Question-19. Can Ohm's Law be applied to circuits with capacitors or inductors? Why or why not?

Answer-19: Ohm's Law cannot be directly applied to circuits with capacitors or inductors because these components store and release energy, affecting the relationship between voltage and current.

Question-20. Explain the concept of conductivity in relation to Ohm's Law.

Answer-20: Conductivity is the inverse of resistance and represents a material's ability to conduct electric current. Higher conductivity corresponds to lower resistance, and vice versa.

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Ohms Law Interview Questions and Answers in PDF form Online

Ohms Law Questions with Answers

Ohms Law Trivia MCQ Quiz

- Electric Current
- Electricity
- Maximum Power Theorem
- Thevenin's Theorem
- Kelvins Bridge Experiment
- Ohms Law
- Kirchhoffs Law KCL and KVL
- Mesh Analysis
- Parallel elements & Current Division
- Series elements & Voltage Division
- Star Delta Connection
- Nodal Analysis
- Norton's Theorem
- Superposition Theorem
- Reciprocity Theorem
- Single Phase Transformer
- Single Phase Induction Motor
- RLC Circuits
- Three-Phase Systems
- Maxwell's Equations
- Transmission Lines
- Smith Chart
- Electrical Safety
- Grounding and Bonding
- Circuit Breaker
- Electric Grids and Smart Grids
- Electric Power Transmission
- Electrical Maintenance
- Fault Analysis
- Network Analysis
- Alternating Current