Primary - 2. An electron traveling north enters a region...

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Unformatted text preview: 2. An electron traveling north enters a region where the electric field is uniform and points west. The electron: A) speeds up B) slows down C) veers east D) veers west E) continues with the same speed in the same direction Ans: C 4. A particle with mass m and, charge q is projected with speed v into the region between two parallel plates as shown. The potential difference between the two plates is V and their separation is d . The change in kinetic energy of the particle as it traverses this region is: A) qV / d B) C) qV D) E) none of these Ans: C 7. The figure shows the motion of electrons in a wire which is near the N pole of a magnet. The wire will be pushed: A) toward the magnet D) upwards B) away from the magnet E) along its length C) downwards Ans: D 8. Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in the same direction. The force per unit length in N/m of one wire on the other is: A) 1 10 3 , repulsive D) 4 10 5 , attractive...
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Primary - 2. An electron traveling north enters a region...

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