Question 295 marksLong AnswerSection C

$(a) Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 10 cm respectively and having radii 2 cm and 1 cm respectively. (b) A current of 500 mA flows in a series circuit containing an electric lamp and a conductor of 10Ω when connected to 6V battery. Find the resistance of the electric lamp.$

Q: (a) Find the ratio of resistances of two copper rods X and Y of lengths 30 cm and 10 cm respectively and having radii 2 cm and 1 cm respectively. (b) A current of 500 mA flows in a series circuit containing an electric lamp and a conductor of 10Ω when connected to 6V battery. Find the resistance of the electric lamp.

(a) The ratio of resistances of two copper rods X and Y of lengths 30 cm and 10 cm respectively and having radii 2 cm and 1 cm respectively is 36:1. (b) The resistance of the electric lamp is $4\Omega$.

Electricity

Electricity

Official answer

4\Omega

Hint

$4\Omega$

Analysis and explanation

4\Omega

Question details

Q29 of 45 questions

Board: CBSE
Class: Class 10
Subject: Science
Year: 2020
Section: Section C
Marks: 5
Type: Long Answer
Chapter: Electricity
Topic: $Electricity$
Bloom's level: Understanding
Syllabus topic: $Electricity$

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Frequently asked questions

$How many marks does this question carry in CBSE Class 10 Science 2020?$

$This question carries 5 marks in the CBSE Class 10 Science 2020 examination.$

$Which chapter does this question come from in Science?$

$This question is from the chapter "Electricity" in the CBSE Class 10 Science syllabus.$

$What topic does this question cover in Science?$

$This question covers the topic "Electricity" from CBSE Class 10 Science.$

$What type of question is this in the CBSE Class 10 Science 2020 paper?$

$This is a Long Answer question from Section C in the CBSE Class 10 Science 2020 paper.$