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गतिमान आवेश और चुंबकत्व Moving Charge An...

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

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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) ?