Reference no: EM132527109
1. A 0.5-μF capacitor is able to store 7.2×10 -10 C of charge with an electric field strength of 0.33 N/C between its plates. How far apart are these plates?
2. A drop of oil contains 25 excess electrons. The oil drop is made to move in an electric field between two parallel plates.
a. Determine the charge on the oil drop.
b. Determine the potential difference needed to suspend the oil drop motionless between the plates. The drop has a weight of 5.0 × 10 -14 N and the plates are 16.0 mm apart.
3. The diagram below depicts an electron (mass, m e = 9.11×10 -31 kg) entering a parallel-plate capacitor that is contained in a vacuum and maintained at a constant potential difference of 40.0
V. Upon entry, the initial velocity of the electron is v = 5.06×10 6 m/s parallel to the plates. After traveling a distance x = 2.38 cm across the plates, the electron exits the capacitor having deflected a distance of z = 0.725 cm toward the positively charged plate.
a. What is the magnitude of the electric field inside the capacitor?
b. What is the velocity of the electron when it leaves the capacitor?
c. By how much does the kinetic energy of the electron change while it is inside the capacitor?
d. How much distance separates the plates of the capacitor?