NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test
NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test is an online chapter test in the NEET UG pattern, covering Magnetism, EMI & AC. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| Magnetism, EMI & AC | 20 |
Difficulty: 7 medium · 13 hard
Electromagnetic Induction MCQ questions with answers
The first 3 of 20 questions. Unlock the series for the rest, each with a solution.
Q1. Match List I with List II. List I: A. Self-inductance B. Magnetic flux C. Magnetic energy density D. Motional EMF. List II: 1. weber 2. volt 3. henry 4. joule per cubic metre. Choose the correct matching.
सूची I का सूची II से मिलान कीजिए। सूची I: A. स्वप्रेरकत्व B. चुंबकीय फ्लक्स C. चुंबकीय ऊर्जा घनत्व D. गतिज विद्युत वाहक बल। सूची II: 1. वेबर 2. वोल्ट 3. हेनरी 4. जूल प्रति घन मीटर। सही मिलान चुनिए।
- A. A-3, B-1, C-2, D-4
- B. A-1, B-3, C-4, D-2
- C. A-3, B-1, C-4, D-2
- D. A-4, B-1, C-3, D-2
Solution
Self-inductance is measured in henry, magnetic flux in weber, energy density in joule per cubic metre, and motional EMF in volt.
स्वप्रेरकत्व हेनरी में, चुंबकीय फ्लक्स वेबर में, ऊर्जा घनत्व जूल प्रति घन मीटर में, और गतिज विद्युत वाहक बल वोल्ट में मापा जाता है।
Q2. An inductor carrying a steady current I stores a magnetic energy U. If the current through the same inductor is increased to 3I, the energy now stored in it becomes
एक स्थिर धारा I वहन करने वाला प्रेरक (inductor) चुंबकीय ऊर्जा U संचित करता है। यदि उसी प्रेरक से बहने वाली धारा को बढ़ाकर 3I कर दिया जाए, तो अब इसमें संचित ऊर्जा हो जाती है
- A. 9U
- B. 6U
- C. 3U
- D. 27U
Solution
The energy stored is U = ½LI², which is proportional to the square of the current. Tripling the current multiplies the energy by 9, giving 9U.
संचित ऊर्जा U = ½LI² होती है, जो धारा के वर्ग के समानुपाती है। धारा को तिगुना करने पर ऊर्जा 9 गुना हो जाती है, जिससे 9U प्राप्त होता है।
Q3. Assertion (A): Self-inductance is often called the inertia of electricity. Reason (R): Self-inductance of a circuit opposes any change in the current flowing through it. Choose the correct option.
अभिकथन (A): स्वप्रेरकत्व को प्रायः विद्युत का जड़त्व कहा जाता है। कारण (R): किसी परिपथ का स्वप्रेरकत्व उसमें प्रवाहित धारा में होने वाले किसी भी परिवर्तन का विरोध करता है। सही विकल्प चुनिए।
- A. Both A and R are true but R is not the correct explanation of A / A और R दोनों सत्य हैं परन्तु R, A की सही व्याख्या नहीं है
- B. A is false but R is true / A असत्य है परन्तु R सत्य है
- C. Both A and R are true and R is the correct explanation of A / A और R दोनों सत्य हैं तथा R, A की सही व्याख्या है
- D. A is true but R is false / A सत्य है परन्तु R असत्य है
Solution
Both statements are true, and self-inductance is called the inertia of electricity precisely because it opposes changes in current, just as mass opposes changes in motion, so R correctly explains A.
दोनों कथन सत्य हैं, और स्वप्रेरकत्व को विद्युत का जड़त्व ठीक इसलिए कहा जाता है क्योंकि यह धारा में परिवर्तन का विरोध करता है, जैसे द्रव्यमान गति में परिवर्तन का विरोध करता है, अतः R, A की सही व्याख्या है।
Frequently asked questions
How many questions are in the NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test?
20 questions for 20 marks, to be answered in 20 minutes.
Is there negative marking in the NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test?
Yes — 0.25 marks are deducted for each wrong answer, as in the real exam pattern.
Which topics does the NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test cover?
Magnetism, EMI & AC (20 questions).
Is the NEET UG Magnetism, EMI & AC: Electromagnetic Induction – Chapter Test free?
It is part of the NEET UG 2027 Mock Test Series (134 tests, ₹299). You can first try Biology in Human Welfare – Topic Test for free.
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