Class 12 Physics CBSE 2019 - Previous Year Questions (Set 1 Solved) | Solved Paper | Board Exam

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📢 Full Playlist Link:    • Class 12 Physics Previous Year Questions (...  

✅ In this video,

✔️ Class: 12th
✔️ Subject: Physics
✔️ Topic Name: CBSE 2019 Previous Year Questions
✔️ Topics Covered In This Video (By Prateek Sir): This video provides an in-depth look into the CBSE 2019 previous year's questions of Class 12 Physics. Prateek Sir breaks down the solutions to the questions, explaining each step with easy-to-understand language. Additionally, there are also discussion and practice questions included. This is a great video for those who need help understanding Physics, and an even better resource for those with upcoming exams.
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00:00 Introduction: Class 12 Physics CBSE 2019 - Previous Year Questions (Set 1 Solved)
00:21 General Instructions
01:46 Section A: (Que. 1 To 5) Que. 1 Draw equipotential surfaces for an electric dipole.
31:13 Section B: (Que. 6 To 12) Que. 6 A capacitor made of two parallel plates, each of area 'A' and separation 'd' is charged by an external d.c.-source. Show that during charging, the displacement current inside the capacitor is the same as the current charging the capacitor.
01:28:21 Section C: (Que. 13 To 24) Que. 13 A capacitor (C) and resistor (R) are connected in series with an AC source of voltage of frequency 50 Hz. The potential difference across C and R are respectively 120 V, 90 V and the current in the circuit is 3A. Calculate (i) the impedance of the circuit (ii) the value of the inductance, which when connected in series with C and R will make the power factor of the circuit unity.
04:11:15 Section D: (Que. 25 To 27)
Que. 25
a. Derive an expression for the induced emf developed when a coil of N turns, and area of cross-section A, is rotated at a constant angular speed @ in a uniform magnetic field B.
b. A wheel with 100 metallic spokes each 0.5 m long is rotated with a speed of 120 rev/min in a plane normal to the horizontal component of the Earth's magnetic field. If the resultant magnetic field at that place is 4 x 10-4 T and the angle of dip at the place is 30°, find the emf induced between the axle and the rim of the wheel.
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