Electric Charges and Fields - Class 12 CBSE Important Questions 2023 | Class 12 Physics Chapter 1
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✔️ Class: 12th
✔️ Subject: Physics
✔️ Chapter: Electric Charges and Fields (Chapter 1)
✔️ Topic Name: Electric Charges and Fields - Class 12 CBSE Important Questions 2023 | Class 12 Physics Chapter 1
✔️ Topics Covered In This Video (By Dheeraj Sir): In this video, Dhiraj Sir will discuss the Important Questions of Chapter 1 Electric Charges and Fields for Class 12th Physics. Dhiraj Sir will explain the important points related to the subject that students should keep in mind while answering the questions. Through this video, he will help students to clear their doubts and understand the topic better.
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00:00 Introduction: Electric Charges and Fields
00:56 Quick Revision:
02:57 Method of charging
24:07 Gold Leaf Electroscope:
29:33 Properties of Electric Charge:
39:05 Coulomb's Law:
43:29 Permittivity (ε):
48:36 Relative permittivity of medium ε, or Dielectric constant:-
03:19:03 Question 1 to 13: Multiple Choice Questions (Q No. 1 to Q No. 13): Electric Charges and Fields
Que. 4 Five charges q,, 92, 93, 94, and q, are fixed at their positions as shown in Fig. 1.4. S is a Gaussian surface. The Gauss's law is given by Which of the following statements is correct?
04:23:04 Question 14 to 19: Very Short Answer Type Question: Electric Charges and Fields
Que. 14 An arbitrary surface encloses a dipole. What is the electric flux through this surface?
04:56:10 Question 20 to 25: Short Answer Type Questions (Q No. 20 to Q No. 25): Electric Charges and Fields
Que. 20 A paisa coin is made up of Al-Mg alloy and weighs 0.75g. It has a square shape and its diagonal measures 17 mm. It is electrically neutral and contains equal amounts of positive and negative charges.
06:13:21 Question 26 to 31: Long Answer Type Questions (Q No. 26 to Q No. 31): Electric Charges and Fields
Que. 29 There is another useful system of units, besides the SI/mks A system, called the cgs (centimeter-gram-second) system. In this system Coloumb's law is given by
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