Ohm's Law
Easyphysics
A resistor of 10 Ω carries a current of 2 A. What is the potential difference across it?
Select the correct option:
Solution
Incorrect! Answer:
20 V
- Definition of Ohm's Law: The potential difference (V) across a resistor is product of the current (I) flowing through it and its resistance (R).
- Formula: V=IR.
- Identify Given Values:
- Resistance R=10 Ω.
- Current I=2 A.
- Calculation:
- V=2 A×10 Ω
- V=20 V.
- Conclusion: The voltage drop across the resistor is 20 Volts.
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About This Question
- Subject
- physics
- Chapter
- current electricity
- Topic
- ohm's law
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
20 V
- Definition of Ohm's Law: The potential difference (V) across a resistor is product of the current (I) flowing through it and its resistance (R).
- Formula: V=IR.
- Identify Given Values:
- Resistance R=10 Ω.
- Current I=2 A.
- Calculation:
- V=2 A×10 Ω
- V=20 V.
- Conclusion: The voltage drop across the resistor is 20 Volts.
This easy difficulty physics question is from the chapter current electricity, covering the topic of ohm's law. It appeared in the 2025 exam.
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