Question

Which of the following statements is/are true? [PAT 1. A positively charged plastic bead vill ataect a neutral plastic bead. b) A positively charged plastic bead will attract a neutral copper bead. o) A current-carrying wire will attract a neutral plastic bead. d) A current-carrying wire will attract a neutral copper bead e) A current-carrying wire will attract a neutral copper bead more strongly than it will attract a neutral plastic bead. f) A permanent magnet will attract a neutral copper bead 2. A hollow metal sphere is electrically neutral (no excess charge). A small amount of negative charge is suddenly added to one point P on the outside surface of the sphere. A few seconds later, where will the excess charge be found? a) All excess charge remains at or near point P. b) Most of the charge remains at point P, but some spreads over the sphere. 9 The excess charge distributes itself evenly over the outside surface of the sphere. d) The excess charge distributes itself evenly over the outside and inside surfaces of the sphere. e) The excess charge distributes itself evenly throughout the material of the sphere. 0 All excess charge will dissipate, and none will remain on the sphere 3. While moving through empty space, a particle with a charge of 2 nC experiences an electric force of o-5 mN at the moment it passes through the point <2,0,ox mm. What is the 24o C magnitude of the electric field at that location? a) 10-14 N/C b) 10-12 N/C c) 9x103 N/C SYaY 2.5x105 N/C e) 4.5x106 N/C f) Not enough information to determine. Which of the following statements is/are true? [PATA] If the electric field is zero at a point space, the electric potential must also be zero at that 4. If the electric potential is zero at a point space, the electric field must also be zero at that y If the electric field is zero everywhere inside a region of space, the electric potential must @If the electric potential is zero everywhere inside a region of space, the electric feld must o lfthe electri fald is constant everwhere inside a region of space, the electric potential ) If the electrie potential is constant everywhere inside a region of space, the electrie field point. also be zero in that region. also be zero in that region. must also be constant in that region.

Answer 1

Option 1 and 2 both are correct. As a charged body attracts another non charged bodies. Current carrying wire does not have charge so it does not attract copper material. Thanks