Question 151 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.

Answer keywords:I-V graphresistancecurrentvoltage

Marking scheme

  1. 1.1 mark for correct answer
  2. 2.0 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.

Common mistakes

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

Analysis and 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.

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.

Question details

Q15 of 39 questions

Board
CBSE
Class
Class 10
Subject
Science
Year
2024
Section
Section A
Marks
1
Type
MCQ
Chapter
Chemical Reactions and Equations
Topic
I-V Graphs
Bloom's level
Knowledge
Syllabus topic
Understanding I-V Graphs

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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.