9. The teft diangram shows a P on a negstively charged particle moving a magneti
ID: 306407 • Letter: 9
Question
9. The teft diangram shows a P on a negstively charged particle moving a magneti A) 3 B) 5 C) 4 D) 2 E) I 10. An electric field of 3.0 kV/m is perpendicular to a magnetic field of 0.20 T. An electron moving in a direction perpendicular to both and B is not deflected if it has E a velocity of A) 6 km/s B) 15 km/s C) 9 km/s D) 12 km/s E) 6.7 m/'s I. A wire carries an electric current straight upward (out of page). What is the direction of the magnetic field due to the current north of the wire? A) north B) west C) south D) cast E) upward At the instant the positively charged body is at the origin, the magnetic field at point P due to the motion of this charged body is in the negative x direction. 12. The charged body must be moving A) in the positive x direction. B) in the negative y direction. C) in the positive y direction. D) in the positive z direction. E) in the negative z direction.Explanation / Answer
9.
Direction of vVelocity of negatively charged particle is along 2
Option (d) is correct.
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10. V= E/B
= 3000/0.2
= 15000 m/s
= 15 km/s
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11.
Using right hand thumb rulez direction of magnetic field is along - x axis or west.
Option (b) is correct.
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12.
Charge must be moving along +z axis.
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Do comment in case any doubt..goodluck
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