Electricity: Circuits and their Components
CBSE · Class 7 · Science
Flashcards for Electricity: Circuits and their Components — CBSE Class 7 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is an electric cell?
Answer
An electric cell is a portable source of electrical energy. It has two terminals: a positive terminal with a metal cap and a negative terminal with a flat metal disc.
विद्युत सेल क्या होता है?
Answer
विद्युत सेल (electric cell) विद्युत ऊर्जा का एक सुवाह्य स्रोत है। इसमें दो टर्मिनल होते हैं: एक धनात्मक टर्मिनल जिस पर धातु की टोपी लगी होती है और एक ऋणात्मक टर्मिनल जिस पर धातु की चपटी डिस्क लगी होती…
What are the two terminals of an electric cell?
Answer
The positive terminal is the metal cap, and the negative terminal is the metal disc. These terminals help connect the cell correctly in a circuit.
विद्युत सेल के दो टर्मिनल क्या हैं?
Answer
धनात्मक सिरा धातु की टोपी है, ऋणात्मक सिरा धातु की डिस्क है। ये सिरा किसी परिपथ में सेल को सही ढंग से जोड़ने में मदद करते हैं।…
How is a battery made from cells?
Answer
A battery is a combination of two or more electric cells. The positive terminal of one cell connects to the negative terminal of the next cell.
कोशिकाओं से बैटरी कैसे बनाई जाती है?
Answer
बैटरी दो या दो से अधिक विद्युत कोष्ठों का संयोजन होती है। एक कोष्ठ का धनात्मक सिरा अगले कोष्ठ के ऋणात्मक सिरे से जुड़ता है।…
Why are more than one cell used in some devices?
Answer
Connecting more than one cell provides energy to the circuit for a longer time and/or more energy. This helps devices work better for longer.
कुछ उपकरणों में एक से अधिक सेल का उपयोग क्यों किया जाता है?
Answer
एक से अधिक सेल को जोड़ने से सर्किट को अधिक समय तक और/या अधिक ऊर्जा मिलती है। इससे उपकरणों को लंबे समय तक बेहतर ढंग से काम करने में मदद मिलती है।…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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