Last Updated on August 31, 2024 by XAM CONTENT
Hello students, we are providing case study questions for class 10 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 10 science. In this article, you will find case study questions for cbse class 10 science chapter 12 Electricity.
| Chapter | Electricity |
| Type of Questions | Case Study Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 10 |
| Subject | Science |
| Useful for | Class 10 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 10 Science Chapterwise Case Study |
Case Study Questions on Electricity
Questions
Question 1:
Read the following and answer the questions given below:
The obstruction offered by a conductor in the path of flow of current is called resistance. The SI unit of resistance is ohm Ω. It has been found that the resistance of a conductor depends on the temperature of the conductor. As the temperature increases the resistance also increases. But the resistance of alloys like mangnin, constantan and nichrome is almost unaffected by temperature. The resistance of a conductor also depends on the length of conductor and the area of cross-section of the conductor. More be the length, more will be the resistance, more be the area of cross-section, lesser will be the resistance.
(i) Which of the following is not will desired in material being used for making electrical wires?
(a) High melting point
(b) High resistance
(c) High conductivity
(d) None of these
Difficulty Level: Medium
(ii) The V-I graph for two metallic wires A and B is given. What is the correct relationship between their temperatures?
(a) TA<TB
(b) TA>TB
(c) TA=TB
(d) none of these
Difficulty Level: Medium
(iii) Two wires of same material one of length L and area of cross-section A, other is of length 2L and area A/2. Which of the following is correct?
(a) R1=R2
(b) R1=4R2
(c) R2=4R1
(d) R1=2R2
Difficulty Level: Medium
(iv) For the same conducting wire
(a) resistance is higher in summer
(b) resistance is higher in winter
(c) resistance is same is summer or in winter
(d) none of these
Difficulty Level: Medium
(v) A wire of resistance 20Ω is cut into 5 equal pieces. The resistance of each part is
(a) 4Ω
(b) 10Ω
(c) 100Ω
(d) 80Ω
Difficulty Level: Medium
Answers
(i) (b): The electrical wire should have low resistance.
(ii) (b): More is the temperature, more will be the resistance. The resistance of $A$ is more, so temperature of $A$ is more.
(iii) (c) : $R_1=\rho \frac{L}{A}, R_2=\rho \frac{2 L}{A / 2}$
(iv) (a): In summers, temperature is more, so resistance is more.
(v) (a): $R^{\prime}=\frac{R}{5}=\frac{20}{5}=4 \Omega$
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Topics from which case study questions may be asked
- Electric Current
- Potential Difference
- Resistance
- Ohm’s Law
- Factor affecting Resistance
- Electric Power
- Electric Energy
- Combination of Resistances
- Resistivity
- Joule’s Law
Case study questions from the above topics may be asked.
Helpful Links for CBSE Class 10 Science Preparation
- Download 125 Important Case Study Questions for CBSE Class 10 Science
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Frequently Asked Questions (FAQs) on Electricity Case Study Questions
Q1: What are case study questions for CBSE examinations?
A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.
Q2: Why are case study questions important for understanding class 10 science chapters?
A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.
Q3: How should students approach answering case study questions for CBSE?
A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of chemical reactions and equations, and formulate well-supported solutions or responses.
Q4: Are there any resources available online for students to practice case study questions on class 10 science chapters for CBSE exams?
A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. If you need more case study questions for your preparation, then you visit Physics Gurukul website.
Q5: How can students effectively prepare for case study questions on Electricity for CBSE exams?
A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.
Q6: How can teachers incorporate case study questions on Electricity class 10 science into classroom teaching?
A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of Electricity.
Q7: How do we connect an ammeter in a circuit?
Ans. An ammeter is always connected in series in a circuit. Thus, it is used to measure the current flowing through a circuit.
Q8: Is electric current a vector quantity?
A8: Electric current is a scalar quantity.
Q9: Does an ammeter have low or a high resistance?
A9: An ammeter has a low resistance.
Q10: State the factors on which the resistance of a conductor depends.
A10: The resistance of a conductor depends upon the
(a) material of the conductor,
(b) length of the conductor, and
(c) area of cross-section of the conductor
Q11: Does the resistance of a metal change when we raise the temperature of the metal?
A11: The resistance of a metal increases with increase in temperature.
Q12: Define electric power.
A12: The rate at which electrical work is done or the rate at which electrical energy is consumed, is called electric power.
Q13: What do you mean by a ‘fuse’?
A13: A fuse is a safety device having a short length of a thin wire of tin-lead alloy, that melts and breaks the circuit if the current exceeds a safe value.
Q14: What will happen when the live and the neutral wires in a circuit touch each other due to defective wiring?
A14: The resistance of the circuit becomes almost zero and very large current flows through it.
