While studying the dependence of potential difference (V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and I. He got a straight line graph passing through the origin. What does the straight line signify? Write the method of determining resistance of the resistor using this graph.
While studying the dependence of potential difference (V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and I. He got a straight line graph passing through the origin. What does the straight line signify? Write the method of determining resistance of the resistor using this graph.
Official answer
The student should check the connections of the ammeter and voltmeter. If the connections are correct, then the student should check if the ammeter and voltmeter are faulty. If they are not faulty, then the student should check if the circuit is open or closed. If the circuit is open, then the student should close the circuit and check again. If the circuit is closed, then the student should check if there is any fault in the circuit.
Marking scheme
- 1.Check the connections of the ammeter and voltmeter.
- 2.Check if the ammeter and voltmeter are faulty.
- 3.Check if the circuit is open or closed.
- 4.Check if there is any fault in the circuit.
Hint
Check the connections of the ammeter and voltmeter. Check if the ammeter and voltmeter are faulty. Check if the circuit is open or closed. Check if there is any fault in the circuit.
Quick oral answer
The student should check the connections of the ammeter and voltmeter. If the connections are correct, then the student should check if the ammeter and voltmeter are faulty. If they are not faulty, then the student should check if the circuit is open or closed. If the circuit is open, then the student should close the circuit and check again. If the circuit is closed, then the student should check if there is any fault in the circuit.
Common mistakes
- 1.Not checking the connections of the ammeter and voltmeter.
- 2.Not checking if the ammeter and voltmeter are faulty.
- 3.Not checking if the circuit is open or closed.
- 4.Not checking if there is any fault in the circuit.
Analysis and explanation
The student should check the connections of the ammeter and voltmeter. If the connections are correct, then the student should check if the ammeter and voltmeter are faulty. If they are not faulty, then the student should check if the circuit is open or closed. If the circuit is open, then the student should close the circuit and check again. If the circuit is closed, then the student should check if there is any fault in the circuit.
Interesting facts
The ammeter measures the current flowing through a circuit.
The voltmeter measures the voltage across a circuit.
The circuit should be closed for the ammeter and voltmeter to work properly.
Question details
Q26 of 37 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2019
- Section
- Section E
- Marks
- 2
- Type
- Short Answer
- Chapter
- Chemical Reactions and Equations
- Topic
- Chemical Reactions and Equations
- Bloom's level
- Knowledge
- Syllabus topic
- Chemical Reactions and Equations
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2019?
This question carries 2 marks in the CBSE Class 10 Science 2019 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 "Chemical Reactions and Equations" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2019 paper?
This is a Short Answer question from Section E in the CBSE Class 10 Science 2019 paper.