Magnetism and Matter — Flashcards
Madhya Pradesh Board · Class 12 · Physics
60 flashcards for Magnetism and Matter (Madhya Pradesh Board Class 12 Physics) to test yourself on key terms and facts.
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State the properties of magnetic field lines.
Answer
1. Magnetic field lines form continuous closed loops. 2. The tangent at any point gives the direction of the net magnetic field B. 3. Closer field lines mean a stronger magnetic field. 4. Magnetic fie…
चुंबकीय क्षेत्र रेखाओं के गुण बताइए।
Answer
1. चुंबकीय क्षेत्र रेखाएँ सतत बंद लूप बनाती हैं। 2. किसी भी बिंदु पर खींची गई स्पर्शरेखा शुद्ध चुंबकीय क्षेत्र B की दिशा देती है। 3. जितनी पास-पास क्षेत्र रेखाएँ होंगी, चुंबकीय क्षेत्र उतना ही प्रबल ह…
चुंबकीय क्षेत्र रेखाएँ बंद लूप क्यों बनाती हैं?
Answer
चुंबकीय क्षेत्र रेखाएँ बंद लूप बनाती हैं क्योंकि अकेले चुंबकीय उत्तर या दक्षिण ध्रुव अस्तित्व में नहीं होते। किसी चुंबक में दोनों ध्रुव होते हैं, इसलिए क्षेत्र रेखाएँ उत्तर ध्रुव से निकलती हैं और दक्ष…
Why do magnetic field lines form closed loops?
Answer
Magnetic field lines form closed loops because isolated magnetic north or south poles do not exist. A magnet has both poles, so field lines leave the north pole and enter the south pole, continuing in…
A short bar magnet has magnetic moment 0.50 J T^-1 and is placed in a uniform magnetic field of 0.20 T at 30 degrees. Find the torque.
Answer
Given: m = 0.50 J T^-1, B = 0.20 T, theta = 30 degrees Formula: tau = mB sin theta Step 1: tau = 0.50 x 0.20 x sin 30 degrees Step 2: sin 30 degrees = 0.5 Step 3: tau = 0.50 x 0.20 x 0.5 = 0.05 N m An…
एक छोटे बार चुंबक का चुंबकीय आघूर्ण 0.50 J T^-1 है और उसे 30 degrees पर 0.20 T के एकसमान चुंबकीय क्षेत्र में रखा गया है। आघूर्ण ज्ञात कीजिए।
Answer
दिया है: m = 0.50 J T^-1, B = 0.20 T, theta = 30 degrees सूत्र: tau = mB sin theta चरण 1: tau = 0.50 x 0.20 x sin 30 degrees चरण 2: sin 30 degrees = 0.5 चरण 3: tau = 0.50 x 0.20 x 0.5 = 0.05 N m उत्तर…
एकसमान चुंबकीय क्षेत्र में चुंबकीय द्विध्रुव पर आघूर्ण का सूत्र बताइए।
Answer
सूत्र: tau = m x B परिमाण: tau = mB sin theta यहाँ, tau का अर्थ N m में आघूर्ण है, m का अर्थ A m^2 में चुंबकीय आघूर्ण है, B का अर्थ टेस्ला में चुंबकीय क्षेत्र है, और theta का अर्थ m तथा B के बीच का को…
State the formula for torque on a magnetic dipole in a uniform magnetic field.
Answer
Formula: tau = m x B Magnitude: tau = mB sin theta Here, tau is torque in N m, m is magnetic moment in A m^2, B is magnetic field in tesla, and theta is the angle between m and B.
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