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Task 1: You are to design a 4-bit arithmetic unit that consists of a 4-bit adder/subtractor circuit. The arithmetic unit takes as inputs two 4-bit numbers (A and B) and one control input (M) add/subtract selector that selects the type of operation the unit will perform. When the input control is '0', the input numbers are added. When it is set to '1', the two input numbers are subtracted (AB).

• Design and construct a 4-bit adder/subtractor circuit. Draw the produced circuit.
Design and construct a 4-bit adder/subtractor circuit. Draw the produced circuit.

. Determine the colors of the bands on a a. 10 percent, 0.6 Ω resistor. b. 35 MΩ, 5% tolerance c. 4.7x109 Ω


The substation bus bar is made up of made 1.5 inches round copper bars 30 ft long. What is the resistance of each bar?


. A one-meter of annealed copper 25 mm in diameter is drawn until its resistance is 40 times the initial resistance. Its diameter afterwards is?


A one-meter rod of 2 cm diameter is drawn until its resistance is 100 times the initial resistance. Its length afterward is?


A coil has a length of 3m having an electron density of 3.34 x 1024 e/m3 with a cross sectional area of 100 cm squared. How much current will pass through the conductor in 1hr?


 An electron gun in a TV set shoots out a beam of electrons. The beam current is 2.1µA. How many electrons strike the TV screen for 5 seconds? How much charge strikes the screen in a minute?


Determine the resistance and the power absorbed by an electric heater that uses 5.0 A when connected across 110 V.


How much charge flow through a light bulb for 3 seconds if the current through the light bulb is 0.75 A?


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