Electric Circuits Answers

Band gap energy is the energy
Select one:
a. between charge carriers
b. energy gap between different states
c. energy required to break a covalent bond
d. between two semiconductor materials

A wire 100cm long and 2mm in diameter has a resistivity of 4.8x10
-8Ωm.
1. Calculate the resistance of the wire?
2. A second wire of the same material has the same weight as the 100m length, but twice its diametric. Evaluate its resistance.
A wire has a resistance of 10.0 ohms at 20.00c and 13.1 ohms at 1000c. Obtain a value for its temperature coefficient of resistance. 

3. What is the potential difference between two points in a circuit if 200J of electrical energy are changed to other forms of energy when 25 coulombs of electric charge pass? If the charge flows in 10 seconds, what is the current? 

A television set shoots out a beam of electrons. The beam current is 10uA. How many electrons strike the TV screen each second? How much charge strike the screen in a minute 


Three cells of emf 1.5v each and internal resistance 0.5ohms are connected in series to a 1.5ohms external resistor. Calculate the current flowing through the circuit.

what is the current when a typical static charge of 0.250 mC moves from your finger to a metal doorknob in 1.00 ms?

Suppose that electron in a uniform magnetic field of flux density 0.03T move in a circle of radius 0.2m what are the velocity and kinetic energy of electrons

How does A/C currents flows in cables connected to source and laod ? Where as net wave of A/C is always equal to zero?

Fine the impedance of a series RLC circuit if the inductive reactance, capacitive reactance and resistance are 184 ohms, 144 ohms and 30 ohms respectively. Also calculate the phase angle between voltage and current

.2, Two point charges 30 micrometer and -40 micrometer are held at the origin and at x 0.72 m, respectively particle q = 42 micrometer is released from rest at x 0.28 m. if the initial acceleration of the particle he magnitude of 1 x 10^5 m/s, what is its mass?

1: Ideal Toy Company has to develop a new toy “Magic-Bulb”. Magic-Bulb is a box having 8 buttons and 8 bulbs on it. Buttons are associated with numbers 0 to 7 (i.e. 1 number written on 1 button). For any number pressed by user Magic-Bulb turns a specific bulb on. Bulbs “Green”, “Yellow”, “Pink”, “Orange”, “Red”, “Purple”, ”Blue” and ”White” are associated with numbers 0, 1, 2, 3, 4, 5, 6 and 7 respectively. Your task is to design Logic diagram for Magic-Bulb’s circuit using the concepts studied so far.
Make truth table for Magic-Bulb
Write functions equations using AND and NOT operations only
Write functions equations using OR and NOT operations only
Draw logic circuit diagram for part b
Draw logic circuit diagram for part c
Are these single-output circuits or multiple-output circuits?

The ratio of heats generated through shunt and galvanometer is 7:5 when they are connected to make an ammeter.If the resistance of the galvanometer is 112Ohm then the resistance of the shunt is