Question:
Study the I-V graph for three resistors of resistances R1, R2 and R3 and select the correct statement from the following: 
Study the I-V graph for three resistors of resistances R1, R2 and R3 and select the correct statement from the following:
Updated On: Jun 10, 2025
- R1 = R2 = R3
- R1 \(>\) R2 \(>\) R3
- R3 \(>\) R2 \(>\) R1
- R2 \(>\) R3 \(>\) R1
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The Correct Option is B
Solution and Explanation
The I-V characteristic graph for resistors shows the relationship between the current (I) through the resistor and the voltage (V) across it. The slope of the line in an I-V graph indicates resistance; a steeper slope corresponds to higher resistance. To determine the resistances R1, R2, and R3:
- Resistor with a steeper slope (lower rate of current increase with voltage) has higher resistance.
- Resistor with a gentler slope (higher rate of current increase with voltage) has lower resistance.
- The line representing R1 has the steepest slope, indicating the highest resistance.
- The line representing R3 has the gentlest slope, indicating the lowest resistance.
- The line for R2 falls between R1 and R3 in terms of slope.
- R1 > R2 > R3
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