1)

What is the inductance in mHr of a 2 cm long, 84.4 turn coil, wrapped on a low carbon steel core that is 40 mm in diameter? NB The permeability of low carbon steel is 2.5 x10-4 H/m (Wb/At-m). Hint: area must be in m2. Answer: The majority of circuits use transistors in a common-emitter configuration where the input is applied to the base and the output is taken from the collector. The output signal of a common emitter amplifier is always 0 a. None of the above 0 b. Equal to the input signal 0 c. In phase with the input signal 0 d. Out of phase with the input signal In a diode, the region near the pn junction consisting of positive and negative ions is called the O a. Holes region O b. Depletion zone 0 c. Recombination area 0 d. Neutral zone Assuming all other factors are the same, the inductance of an inductor will be larger if O a. more turns are added O b. the area is made larger O c. the length is shorter O d. all of the aboveIn a series RLC circuit, if the frequency is below the resonant frequency, the circuit will appear to be O a. Resistive O b. None of the above O c. Capacitive O d. Inductive