Last Updated on October 22, 2024 by XAM CONTENT
Hello students, we are providing case study questions for class 7 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 7 science. In this article, you will find case study questions for cbse class 7 science chapter 10 Electric Currents and Its Effects.
| Chapter | Electric Currents and Its Effects |
| Type of Questions | Case Study Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 7 |
| Subject | Science |
| Useful for | Class 7 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 7 Science Chapterwise Case Study |
Case Study Questions on Electric Currents and Its Effects
Questions
Question 1:
Read the given passage below and answer the question:
Electricity is the form of energy which we use electricity for many purposes to make our tasks easier. Electricity makes it possible to light our homes, roads, offices, markets and factories even after sunset. A bulb has a thin wire that gives off light. The wire of an electric bulb gets heated to such a high temperature that it starts glowing. Nowadays The fluorescent CFLs and LED bulbs are being used for lighting as they are considered to much better than incandescent electric bulbs. However, damaged CFLs need to be disposed off safely. It is advised to use electrical appliances and gadgets, which are electricity efficient. It also advisable to use ISI marked electrical appliances and gadgets
Q.1. What is the name of thin wire in the electric bulb?
(a) Element
(b) Coil
(c) Filament
(d) Fuse
Difficulty Level: Easy
Ans. Option (c) is correct.
Explanation: An electric bulb has a filament that is connected to its terminals. The filament of an electric bulb gets heated to such a high temperature that it starts glowing.
Q.2. CFLs and LED stand for:
(a) Compact fluorescent lamps and light emitting diode.
(b) Composed fluorescent lamps and light emitting diode.
(c) Compact fluorescent lamps and light emission diode.
(d) Composed fluorescent lamps and light emission diode.
Difficulty Level: Medium
Ans. Option (a) is correct.
Explanation: CFLs – Compact fluorescent lamps, LED – light emitting diode.
Q.3. Fluorescent tubes and CFLs contain toxic gas:
(a) carbon monoxide
(b) water vapour
(c) mercury vapours
(d) Chlorofluorocarbons
Difficulty Level: Hard
Ans. Option (c) is correct.
Explanation: Fluorescent tubes and CFLs contain mercury vapour, toxic in nature. Therefore, damaged fluorescent tubes or CFLs need to be disposed off safely.
Q.4. What is a disadvantage of using incandescent electric bulbs? How LED bulbs are better than incandescent bulbs and CFLs?
Difficulty Level: Hard
Ans. Incandescent electric bulbs give heat therefor, a part of electricity consumed is used in producing heat which results in the wastage of electricity.
LED bulbs consume less electricity as compared to incandescent bulbs or CFLs. Thus, LED bulbs are much electricity efficient.
Q.5. Who assigns ISI mark? Why is it suggested to use ISI mark products?
Difficulty Level: Hard
Ans. Bureau of Indian Standards, New Delhi assigns a Standard Mark on products, called ISI mark. The ISI mark is an assurance of conformity to the specifications given on the products. It is therefore suggested to use ISI mark products.
Also check
- Wastewater Story Class 7 Case Study Questions Science Chapter 13
- Forests Our Lifelines Class 7 Case Study Questions Science Chapter 12
- Light Class 7 Case Study Questions Science Chapter 11
- Electric Currents and Its Effects Class 7 Case Study Questions Science Chapter 10
- Motion and Time Class 7 Case Study Questions Science Chapter 9
- Reproduction in Plants Class 7 Case Study Questions Science Chapter 8
- Transpirations in Animals and Plants Class 7 Case Study Questions Science Chapter 7
- Respiration in Organisms Class 7 Case Study Questions Science Chapter 6
- Physical and Chemical Changes Class 7 Case Study Questions Science Chapter 5
- Acids Bases and Salts Class 7 Case Study Questions Science Chapter 4
- Heat Class 7 Case Study Questions Science Chapter 3
- Nutrition in Animals Class 7 Case Study Questions Science Chapter 2
- Nutrition in Plants Class 7 Case Study Questions Science Chapter 1
Topics from which case study questions may be asked
- Define electric current.
- Define electricity.
- Discuss electric circuits and its components.
- Describe the heating effect of electric current.
- Explain the magnetic effect of electric current.
We use electrical appliances in everyday life from morning to night. We use electric bulbs, air conditioners, refrigerators, etc., They run with the help of electrical energy.
- Electricity is the form of energy, which is used to run appliances, move things and to do work using these appliances.
- Electricity can be generated naturally through lightning or artificially through the generator.
- Electric circuit is a continuous and closed circuit of electric current.
Components of electric circuit: Bulb, electric cell, switch (key), conductors, bulb and other devices which are used.
For further practice on case study questions related to Class 7 Science Chapter 10 Electric Currents and Its Effects, we recommend exploring the link given below.
Frequently Asked Questions (FAQs) on Electric Currents and Its Effects 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 7 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 do case study questions differ from other question types?
A3: Unlike direct questions that test specific knowledge, case study questions involve analyzing a scenario, understanding the context, and applying various scientific concepts to answer the questions. They test higher-order thinking skills such as analysis, synthesis, and evaluation.
Q4: Are there any resources available online for students to practice case study questions on class 7 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. There is another website Physics Gurukul that offers a large collection of case study questions.
Q5: How can students effectively prepare for case study questions on Electric Currents and Its Effects 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 Electric Currents and Its Effects class 7 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 Electric Currents and Its Effects.
Q7: What steps should I follow to correctly answer case study questions?
A7: Follow these steps:
Read the case study carefully. Understand the scenario and the information provided.
Identify the key concepts. Determine which scientific principles or concepts are relevant to the case study.
Analyze the information. Break down the information, identify relationships, and note any data or facts given.
Answer the questions. Apply your knowledge to answer the questions, ensuring that your responses are based on the case study and the relevant scientific concepts.
Q8: What should I check when reading a case study?
A8: Check the following:
Context and background: Understand the setting and context of the case study.
Key facts and data: Identify important details, data points, and observations mentioned.
Relevant concepts: Recognize which scientific concepts and principles are applicable.
Questions asked: Carefully read each question to understand what is being asked and how it relates to the case study.
Q9: What are common mistakes to avoid when answering case study questions?
A9: Common mistakes include:
Not reading the case study carefully: Missing important details and context.
Ignoring key concepts: Failing to identify and apply relevant scientific principles.
Superficial analysis: Providing answers that lack depth and do not fully address the questions.
Making assumptions: Adding information not provided in the case study or making unsupported assumptions.
Q10: How can I ensure my answers are thorough and well-structured?
A10: Ensure your answers are thorough and well-structured by:
Organizing your thoughts: Structure your answer logically with a clear introduction, body, and conclusion.
Using evidence: Support your answers with specific information from the case study.
Applying relevant concepts: Clearly explain how scientific principles relate to the case study.
Reviewing your answers: Check for completeness and accuracy, ensuring all parts of the question are addressed.
Q11: What are the important keywords from the chapter “Electric Currents and Its Effects”?
A11: Important keywords from the chapter “Electric Currents and Its Effects” are given below:
Appliances: A machine or device designed to perform a specific task or function.
Generator: A machine which generates something for example electricity.
Circuit: A circular path in which electricity flows.
Resistance: An electrical component which resists or opposes the flow of electric current.
Fuse: A safety device used in electric circuits.
Coil: A long thin piece of wire spiralled into circles.
