Project - Engineering - ثاني ثانوي

Project Design the following circuit: $3 33 3 X1 12V X2 12V 11 S1 R 4 ww 100 12 5 52 V A 2 HilH 10V X1 ww TUV Connect 2 lamps X₁ and X2 to this circuit, each of which operates normally at a voltage of 12V and is damaged at a voltage greater than 15V. Connect 1 resistor in series with X₁, with resistance R = 100. Connect 3 switches S1, S2, S3. These show very little resistance in the circuit, of the order of 10-70 when closed, according to the program, and can therefore be considered negligible. Connect 3 ammeters, to measure the current in each branch of the circuit. وزارة التعليم Ministry of Education 62 2024-1446 11 A 10V

وزارة التعليم Ministry of Education 2024-1446 3 Do the following: Open switch S3. What do you notice? Explain what you see. With S3 closed, and S₂ open, close S₁. What do you notice? Explain what you observe. With S3 and S₁₂ closed, close S₂. What do you notice? Explain what you observe. X1 www 11 A 12V X2 ww 12V 12 S1 S3 Find the relationship of the current intensities IT, I₁ and 12 from the readings of the ammeters. 1 Find the resistance R₁ from the voltage V₁ and the current I₁, and the resistance R₂ from the voltage V2 and the current l₂, where R₁ is the resistance of lamp X₁ and R2 is the resistance of lamp X2. After stopping the simulation, change the source voltage from 10V to 20V and close switches S₁ and S2. V Then close S₂ and write down what you notice about the bulbs X1 and X2. Also, write what you notice about the values of current intensities IT, I₁ and 12. 10V X1 X2 WWW 12V 12V With S3 and S₁ open, close S2 and write down what you notice about the bulbs X1 and X2. Explain your observations. 63

Wrap up Now you have learned: > to distinguish between direct (DC) and alternating (AC) electrical currents. > to read and draw simple circuits and how they work. > to apply Ohm's law. > to use Multisim Live to design and simulate electrical circuits. > to use probes to measure voltage and current in simulations. KEY TERMS AC Electron Resistor Ammeter joule Source ampere Multimeter volt coulomb Node Voltage Current ohm Voltmeter DC Ohmmeter watt Ministry of Education 64 2024-1446