Question

1. When the terminals of a battery are connected to two large parallel conducting plates, the resulting →− charges cause an electric field E in the region between the plates that is nearly uniform. If the plates are horizontal and separated by 1.0 cm and the plates are connected to a 100V battery, 4 N/C. Suppose the direction of →−E is vertically upwards, the magnitude of the field is E = 1.00×10. (a) If the electron is released from rest at the upper plate, what is the acceleration? (b) What speed and kinetic energy does the electron acquire while travelling 1.0 cm to the lower plate? (c) How much time is required for it to travel this distance? 2. A long cylinder of radius a has a charge of Q coul/m. Find the potential difference between two points at distances r1 and r2 from the axis of the cylinder. 3. A parallel-plate capacitor with plate separation d has a capacitance C1. Find its new capacitance when an isolated metal slab of thickness p is placed between the plates. 4. The capacitance of a capacitor is increased by a factor of 1.5 when it is completely filled with a certain dielectric material. Find the dielectric constant of the material and its electric susceptibility. 5. (a) What interaction between charge carriers and the crystal lattice is responsible for the gaps in the allowed energies of the carriers? (b). Discuss briefly the contrast between the so-called valence band and conduction band in a crystalline solid.

Answer 1

Answer:

use the Lorentz force equations mate..u will get the ans..