Electromagnetic Waves
Madhya Pradesh Board · Class 12 · Physics
Flashcards for Electromagnetic Waves — Madhya Pradesh Board Class 12 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.
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See them allमूल Ampere का परिपथीय नियम बताइए।
Answer
मूल Ampere का परिपथीय नियम है: ∮ B · dl = μ0 i(t) अर्थ: किसी बंद लूप के चारों ओर चुंबकीय क्षेत्र उसमें से गुजरने वाली धारा पर निर्भर करता है। इकाइयाँ: B tesla में, dl metre में, i ampere में। त्वरित ट…
State the original Ampere's circuital law.
Answer
Original Ampere's circuital law is: ∮ B · dl = μ0 i(t) Meaning: The magnetic field around a closed loop depends on the current passing through it. Units: B in tesla, dl in metre, i in ampere. Quick no…
Why was displacement current introduced?
Answer
A charging capacitor creates a situation where one surface gives current through the wire, while another surface between the plates gives no conduction current. To remove this inconsistency, Maxwell i…
विस्थापन धारा को क्यों introduced किया गया?
Answer
एक charging capacitor ऐसी स्थिति बनाता है जहाँ एक सतह wire के through धारा देती है, जबकि plates के बीच वाली दूसरी सतह पर कोई conduction current नहीं होता। इस असंगति को दूर करने के लिए Maxwell ने विस्थ…
capacitor plates के बीच विद्युत फ्लक्स का सूत्र बताइए।
Answer
capacitor surface से होकर विद्युत फ्लक्स है: Φ_E = |E| A = (1/ε0)(Q/A)A = Q/ε0 अर्थ: फ्लक्स plates पर मौजूद charge Q पर निर्भर करता है। इकाइयाँ: Φ_E N m²/C में, Q coulomb में, ε0 C² N⁻¹ m⁻² में।…
State the formula for electric flux between capacitor plates.
Answer
Electric flux through the capacitor surface is: Φ_E = |E| A = (1/ε0)(Q/A)A = Q/ε0 Meaning: flux depends on the charge Q on the plates. Units: Φ_E in N m²/C, Q in coulomb, ε0 in C² N⁻¹ m⁻².
A capacitor has charge changing at 2.0 C/s. Find the displacement current.
Answer
Given: dQ/dt = 2.0 C/s Formula: i_d = ε0 dΦ_E/dt From Φ_E = Q/ε0, we get: ε0 dΦ_E/dt = dQ/dt So: i_d = 2.0 A Answer: 2.0 A Unit check: current is measured in ampere.
एक capacitor में charge 2.0 C/s की दर से बदल रहा है। विस्थापन धारा ज्ञात कीजिए।
Answer
दिया है: dQ/dt = 2.0 C/s सूत्र: i_d = ε0 dΦ_E/dt Φ_E = Q/ε0 से, हमें मिलता है: ε0 dΦ_E/dt = dQ/dt अतः: i_d = 2.0 A उत्तर: 2.0 A इकाई जाँच: धारा को ampere में मापा जाता है।…
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