What bias conditions must be present for the normal operation of a transistor amplifier? a. the emitter-base junction must be forward biased, and the collector-base junction must be reverse biased. b. both junctions must be forward biased. c. the emitter-base junction must be reverse biased, and the collector-base junction must be forward biased. d. both junctions must be reverse biased.

What is the difference between electrically neutral objects and electrically charged objects

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions