Reference no: EM131000115
1. A negatively charged pith ball (mass 7.00x10-3 g , charge -2.20 nC ) is suspended vertically from a light nonconducting string of length 13.0 cm . This apparatus is then placed in a horizontal uniform electric field. After being released, the pith ball comes to a stable position at an angle of 11.2o to the left of the vertical.
Part A. What is the direction of the external electric field?
Part B. Determine the magnitude of the electric field. Answer in N/C
Quesiton 2. Two parallel plates, 6.45 cm on a side, are separated by 5.32 mm
Part A. Determine their capacitance if the volume from one plate to midplane is filled with a material of dielectric constant 2.55 and the rest is filled with a different material of dielectric constant 4.10.
Part B. If these plates are connected to a 12-V battery, what is the electric field strength in the dielectric region with k1 = 2.55 ?
Part C. What is the electric field strength in the dielectric region with k2 = 4.10 ?
Question 3 Two parallel plates, 6.25 cm on a side, are separated by 7.12 mm
part A. Determine their capacitance if the volume from one edge to the middle is filled with a material of dielectric constant 2.55 and the rest is filled with a different material of dielectric constant 4.10.
Part B. If these plates are connected to a 12-V battery, what is the electric field strength in the dielectric region with k1 = 2.55?
Part C. What is the electric field strength in the dielectric region with k2 = 4.10?
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