WebNCERT Exemplar for Class 7 Science Chapter 14 Electric Current and Its Effects Multiple Choice Questions 1. When an electric current flows through a copper wire AB as shown in Figure14.1, the wire (a) deflects a magnetic needle placed near it. (b) becomes red hot. (c) gives electric shock. (d) behaves like a fuse. Soln: WebCBSE CLASS 10 Syllabus for Science 2024-24 Marks: 80 Unit No. Unit Marks I Chemical Substances-Nature and Behaviour 25 II World of Living 25 III Natural Phenomena 12 IV …
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WebAnswer: b) Watts. Explanation: The SI unit of power is the watt, one joule per second. 4. State true or false: A moving electric charge generates a magnetic field. TRUE. FALSE. Answer: a) TRUE. Explanation: When an electrical charge moves or electricity passes through a wire magnetic field in a circular is created. 5. WebNuclear Energy is the energy in the core of an atom. Where an atom is a tiny particle that constitutes every matter in the universe. Normally, the mass of an atom is concentrated at the centre of the nucleus. Neutrons and … WebThese Science experiments for CBSE Class 7 play a vital role for a student studying in a Science stream. It is a kind of hands-on activities. It helps the students to engage more within the topics on the subject. The subject becomes more interesting with these practical experiments of CBSE Class 7. t-slot mounts