A 9.2 m wire carries a current of 7.0 A toward the direction A magnetic force of

Question

A 9.2 m wire carries a current of 7.0 A toward the direction A magnetic force of 0.87 times 10^-6 N acts on wire in the -y direction Find the magnitude and direction of the magnetic field producing the force. 1 350 times 10^-8 T 3.162 times 10^-7 T 5.172 times 10^-8 T 7.142 times 10^-8 T Direction: + z direction -z direction + x direction -x direction Two species of singly charged positive ions of masses 9.1 times 10^-27 kg and 2.27 times 10^-28 kg enter a magnetic field at the same location with a speed of 1.13 times 10^6 m/s. The charge on an electron is rho_e. If the strength of the field is 0.244 T and the ions move perpendicularly the field find their distance of separation after they complete one half og their circular path 1.3007 cm 8.5501 cm 11.787 cm 7.8631 cm

Explanation / Answer

10. Since according to the Fleming's left hand rule,

thumb shows dierection of force

fore fingre shows diection of magnetic field

The middle finger shown the derection of current

From the givne data current is along +x and force is along -y hence the magnetic field should be along

+z direction.

From equation for force we have F=ilB   

0.87x10-6 = 7x9.2xB

B= 1.350x10-8T option a is correct

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