Q15
1 markMCQSection A

Study the I-V graph for three resistors of resistances R1\mathrm{R}_1, R2\mathrm{R}_2 and R3\mathrm{R}_3 and select the correct statement from the following:

Figure for question 15
Chemical Reactions and Equations
I-V Graphs

Options

(A)R1=R2=R3\mathrm{R}_1 = \mathrm{R}_2 = \mathrm{R}_3
(B)R1>R2>R3\mathrm{R}_1 > \mathrm{R}_2 > \mathrm{R}_3
(C)R3>R2>R1\mathrm{R}_3 > \mathrm{R}_2 > \mathrm{R}_1
(D)R2>R3>R1\mathrm{R}_2 > \mathrm{R}_3 > \mathrm{R}_1
Official Answer

The correct statement is R3>R2>R1\mathrm{R}_3 > \mathrm{R}_2 > \mathrm{R}_1.

I-V graphresistancecurrentvoltage

Marking Scheme

  • 11 mark for correct answer
  • 20 marks for incorrect answer

Hint

Analyze the I-V graph to determine the relative resistances of the three resistors.

Quick Oral Answer

The I-V graph shows that the current increases as the voltage increases for all three resistors. However, the rate of increase in current is different for each resistor. The resistor with the highest resistance has the lowest current at a given voltage, while the resistor with the lowest resistance has the highest current at a given voltage. Therefore, the correct statement is R3>R2>R1\mathrm{R}_3 > \mathrm{R}_2 > \mathrm{R}_1.

Analysis & Explanation

The I-V graph provides information about the relationship between current and voltage for different resistors. By analyzing the graph, we can determine the relative resistances of the three resistors. The resistor with the highest resistance has the lowest current at a given voltage, while the resistor with the lowest resistance has the highest current at a given voltage. This information can be used to select the correct statement from the options provided.

Common Mistakes

  1. 1Confusing the order of resistances
  2. 2Not analyzing the graph carefully

Interesting Facts

The I-V graph is a fundamental tool in electronics and electrical engineering.

Understanding the relationship between current and voltage is crucial for designing and analyzing electronic circuits.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2024?

This question carries 1 mark in the CBSE Class 10 Science 2024 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "I-V Graphs" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2024 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.