Calculate the radius of the circular orbit for the parameters specified below. P

Question

Calculate the radius of the circular orbit for the parameters specified below. Part (a) uses parameter values that can be set using the animation sliders, and you can use the animation to verify your calculations. Part (b) uses parameter values outside the range of the animation.

(a) Let the magnitude of the magnetic field B = 0.9 T and let the charge be an electron moving with a speed of 2.2 106 m/s.

r =

Answer*10-5 m

(b) Let the magnitude of the magnetic field B = 1.2 T and let the charge be an electron moving with a speed of 7.3 106 m/s.

r =

Answer*10-5 m

Active Figure Motion of a Charged Particle in a Uniform Magnetic Field The animation below illustrates a charged particle moving in circular motion due to the magnetic force caused by a constant and uniform magnetic field oriented into the page. The blue crosses represent the tails of the magnetic field vectors. Use the blue sliders to adjust the mass, speed, particle charge and magnetic field magnitude. Change each parameter and observe the effect on the particle's motion. Ifthe particle nstructions moves out of the applet window, press reset. Explore A charged particle moving at right angles to a constant and uniform magnetic field B experiences a magnetic force that Change Magnetic field causes it to move in a circle of radius. 0.5 T 1.0 -2 -1 0 1 2 2.0 Changing the sign of the charge changes the direction of rotation. 4.0 Speed 3.0 x 10 m/s -1,0 5.0 Rotation radiu 682 x 105 m

Explanation / Answer

into figure??

m of electron 9*10-31 q=1.6*10-19

r=9.10-31 * 2.2 *106 / 1.6* 10-19 * 0.9

= 1.375* 10 -5 m

r=9*10-31 * 7.3 * 10 6 / 1.6* 10-19 * 1.2

=3.421* 10 -5m

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