गतिमान आवेश और चुंबकत्व Moving Charge And Magnetism L-1परिचय | Physics 12th/JEE/NEET 2024 |Gopal Sir

Class 12 Physics | Chapter 4 Moving Charges and Magnetism | Important Questions & Quick Revision | Part 1

Class 12 Physics | Chapter 4 Moving Charges and Magnetism | Important Questions & Quick Revision | Part 2

Class 12 Physics | Chapter 4 Moving Charges and Magnetism | Important Questions & Quick Revision | Part 3

NEET 2020 - Revision In 60 Days | Class 12 | Moving Charges And Magnetism Part - 1 | Quick Revision

JEE Mains 2020 - 30 Days Revision | Moving Charge & Magnetism - Most Important Questions | Physics

NEET 2020 - Revision In 60 Days | Class 12 | Moving Charges And Magnetism Part - 2 | Quick Revision

Using method of dimensions, establish relation among given physical quantities : (a) Heat H produced in a wire depends on current i flowing through it, its resistance R and time t . (b) The magentic field F_(m) acting on a moving charged particle in magnetic field depends on charge on particle q , its speed v and magnetic field B Dimensional formulae : R : ML^(2) T^(-3) A^(-2), B : MT^(-2) A^(-1)

Shows a convex lens of focal length 12 cm lying in a uniform magnetic field B of magnitude 1.2 T parallel to its principal axis. A particle having a charge 2.0X 10^(-3) C and mass 2.0 X 10^(-5) kg is projected perpendiucular to the plane of the diagram with a speed of 4.8 ms ^(-1). The particle moves along a circle with its centre on the principal axis at a distance of 18 cm from the lens. Show that the image of the particle goes along a circle end find the radius of thet circle.

In Fig., three charged particles lie on an x axis. Particles 1 and 2 are fixed in place. Particle 3 is free to move, but the net electrostatic force on it from particles 1 and 2 happens to be zero. If 2.0 L_(23) = L_(12) , what is the ratio q_(1)//q_(2) ?