Study the following circuit : On the basis of this circuit, answer the following questions : (a) Find the value of total resistance between the points A and B. (b) Find the resistance between the points B and C. (c) (i) Calculate the current drawn from the battery, when the key is closed. OR (c) (ii) In the above circuit, the resistor or the parallel combination of two resistors of , which one of the two will have more potential difference across its two ends? Justify your answer.
Study the following circuit : On the basis of this circuit, answer the following questions : (a) Find the value of total resistance between the points A and B. (b) Find the resistance between the points B and C. (c) (i) Calculate the current drawn from the battery, when the key is closed. OR (c) (ii) In the above circuit, the resistor or the parallel combination of two resistors of , which one of the two will have more potential difference across its two ends? Justify your answer.
The value of total resistance between the points A and B is 4 ohms. The resistance between the points B and C is 8 ohms. The current drawn from the battery, when the key is closed, is 1 ampere. The 16 ohm resistor will have more potential difference across its two ends.
Marking Scheme
- 1The value of total resistance between the points A and B is 4 ohms.
- 2The resistance between the points B and C is 8 ohms.
- 3The current drawn from the battery, when the key is closed, is 1 ampere.
- 4The 16 ohm resistor will have more potential difference across its two ends.
Hint
Use Ohm's law to find the current drawn from the battery, and then use the formula for equivalent resistance to find the resistance between the points B and C.
Quick Oral Answer
The value of total resistance between the points A and B is 4 ohms. The resistance between the points B and C is 8 ohms. The current drawn from the battery, when the key is closed, is 1 ampere. The 16 ohm resistor will have more potential difference across its two ends.
Analysis & Explanation
The circuit consists of two resistors in series, with a total resistance of 4 ohms. The potential difference across the battery is 6 volts, and the current drawn from the battery is 1 ampere. The resistance between the points B and C is 8 ohms. The potential difference across the 16 ohm resistor is 16 volts, which is the same as the potential difference across the parallel combination of the two 8 ohm resistors.
Common Mistakes
- 1Calculating the equivalent resistance of the two resistors in series incorrectly.
- 2Not using Ohm's law to find the current drawn from the battery.
- 3Not calculating the potential difference across the 16 ohm resistor correctly.
Interesting Facts
The circuit consists of two resistors in series, with a total resistance of 4 ohms.
The potential difference across the battery is 6 volts, and the current drawn from the battery is 1 ampere.
The resistance between the points B and C is 8 ohms.
Spotted a mistake or something unclear?
Tell us — we fix reported answers fast.
Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2024?
This question carries 4 marks in the CBSE Class 10 Science 2024 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Electricity" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Electric Circuits" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2024 paper?
This question appears in Section E in the CBSE Class 10 Science 2024 paper.