1·The ma gnitude of the magnetic force that acts on a charged particle in a magn

Question

1·The ma gnitude of the magnetic force that acts on a charged particle in a magnetic field is independent of A. the sign of the charge C. the magnitude of the magnetic field E. the velocity components of the particle B. the magnitude of the charge D. the direction of motion of the particle. 2. A long straight wire on the x-axis carries a 40-A current in the +x-direction. At a particular instant, an electron moving at 1.0 x 107 m/s in the -direction is at y 0.10 m in the xy plane. Determine the force on the electron at this instant. 40 A A. 1.3 × 10-16 N in the-x-direction B. 1.3 x 10-16 N in the +x-direction C. 6.5 x 10-10 N in the ty-direction D. 6.5 × 10-10 N in the-y-direction E. 6.5 x 10-16 N in the +x-direction 7 0.101.0 10'm/s 3. A uniform magnetic field B is directed parallel to the y-axis and fills all space. At some instant a particle, carrying a charge q, is moving with velocity vector v in the xy-plane in the direction indicated in the diagram. The magnitudes are B = 0.50 T, u-2.0 m/s, and q +0.020 C. What is the magnitude of the magnetic force on the particle? A. 0 D. 0.017 N G. 0.012 N +Z axis is out of the page B. 0.010 N E. 0.0035 N C. 0.020 N F. 0.080 N 4. Two particles move through a magnetic field that is directed up out of the plane of the page. The figure shows the paths taken by the two particles as they move through the field. The particles are subject to no other forces or fields. Which statement concerning these particles is true? A. The particles may both be neutral. B. Particle A is positively charged; B is negative. C. Particle A is positively charged; B is positive. D. Particle A is negatively charged; B is negative. E. Particle A is negatively charged; B is positive.

Explanation / Answer

here,

1)

the magnitude of magnetic force on charge particle , F = q * v * B * sin(theta)

so,

it depends on charge on particle , magnitude and direction of speed and magnitude of magnegtic feild

it does not depends on the sign of charge

so the correct option is A) the sign of the charge

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