LeftOver_42501

# LeftOver_42501 - A wire contains a steady current of 2 A...

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A wire contains a steady current of 2 A. The number of electrons that pass a cross section in 2 s is: 2 4 6.3 × 10 18 1.3 × 10 19 2.5 × 10 19 A charge Q is spread uniformly along the circumference of a circle of radius R . A point particle with charge q is placed at the center of this circle. The total force exerted on the particle q can be calculated by Coulomb's law: just use R for the distance just use 2 R for the distance just use 2 R for the distance result of the calculation is zero none of the above The electric field due to a uniform distribution of charge on a spherical shell is zero: everywhere

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nowhere only at the center of the shell only inside the shell only outside the shell A 200-N/C electric field is in the positive x direction. The force on an electron in this field is: 200 N in the positive x direction 200 N in the negative x direction 3.2 × 10 –17 m/s 2 , in the positive x direction 3.2 × 10 –17 m/s 2 , in the negative x direction 0 An electric dipole is oriented parallel to a uniform electric field, as shown.
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