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What is the resistance (in Ω) of an electrical component if a current of 0.5 A passes through it on the application of 20 V of potential difference across it?
- a)10
- b)80
- c)20
- d)40
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
What is the resistance (in Ω) of an electrical component if a current...
According to Ohm’s law
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Voltage (V) = Current (I) × Resistance(R)
R = V/I
= 20/0.5
= 40 Ω.
Most Upvoted Answer
What is the resistance (in Ω) of an electrical component if a current...
Understanding Resistance
Resistance is a measure of how much a component opposes the flow of electric current. It is defined using Ohm's Law, which states:
Ohm's Law:
Voltage (V) = Current (I) × Resistance (R)
Where:
- V is the voltage in volts (V)
- I is the current in amperes (A)
- R is the resistance in ohms (Ω)
Given Values
- Potential Difference (V) = 20 V
- Current (I) = 0.5 A
Calculating Resistance
To find the resistance (R), we rearrange Ohm's Law:
R = V / I
Now we can substitute the values:
R = 20 V / 0.5 A
Performing the Calculation
- R = 20 / 0.5
- R = 40 Ω
Conclusion
The resistance of the electrical component is 40 ohms (Ω).
Thus, the correct answer is option 'D'. This demonstrates the relationship between voltage, current, and resistance in electrical circuits. Understanding this relationship is essential for analyzing and designing electrical systems.
Resistance is a measure of how much a component opposes the flow of electric current. It is defined using Ohm's Law, which states:
Ohm's Law:
Voltage (V) = Current (I) × Resistance (R)
Where:
- V is the voltage in volts (V)
- I is the current in amperes (A)
- R is the resistance in ohms (Ω)
Given Values
- Potential Difference (V) = 20 V
- Current (I) = 0.5 A
Calculating Resistance
To find the resistance (R), we rearrange Ohm's Law:
R = V / I
Now we can substitute the values:
R = 20 V / 0.5 A
Performing the Calculation
- R = 20 / 0.5
- R = 40 Ω
Conclusion
The resistance of the electrical component is 40 ohms (Ω).
Thus, the correct answer is option 'D'. This demonstrates the relationship between voltage, current, and resistance in electrical circuits. Understanding this relationship is essential for analyzing and designing electrical systems.
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What is the resistance (in Ω) of an electrical component if a current of 0.5 A passes through it on the application of 20 V of potential difference across it?a)10b)80c)20d)40Correct answer is option 'D'. Can you explain this answer?
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