SECTION A
1a. What is Ohm's Law? State the mathematical expression and define each variable.
b. Explain the difference between analog and digital signals. Give examples of each.
2a. Define a resistor. How does it affect an electrical circuit?
b. Describe the function of a capacitor in an electronic circuit.
3a. What is the role of a diode? Provide examples of its applications.
b. Explain how a transistor works. What are its different types and uses?
4a. Define integrated circuit (IC). How does it differ from discrete components?
b. What is a voltage divider circuit? Provide an example of its use.
5a. Describe the concepts of alternating current (AC) and direct current (DC).
b. What is a logic gate? List the basic types and their truth tables.
6a. Explain the operation of an operational amplifier (op-amp). Where is it commonly used?
b. Define frequency, wavelength, and amplitude in the context of electromagnetic waves.
7a. What is a flip-flop in digital electronics? Describe its types and applications.
b. Define the term bit and byte. How are they related to digital data storage?
8a. Describe the difference between synchronous and asynchronous communication.
b. Explain the working principle of a light-emitting diode (LED). What are its advantages?
9a. What is a sensor? Provide examples of sensors used in electronic devices.
b. Define the terms 'input impedance' and 'output impedance' in relation to electronic circuits.
10a. Describe the process of modulation and demodulation in communication systems.
b. Explain the concept of multiplexing and its significance in data transmission
Answer (2)
This answer provides an overview of fundamental concepts in physics and electronics, covering Ohm's Law, the differences between analog and digital signals, and the roles of resistors, capacitors, diodes, and transistors. It also explores integrated circuits, logic gates, operational amplifiers, and basic communication principles. Overall, it encompasses essential topics necessary for a thorough understanding of modern electronics.
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This answer provides a comprehensive overview of various fundamental concepts in physics and electronics, including Ohm's Law, the difference between analog and digital signals, and the roles of resistors, capacitors, diodes, and transistors. Additionally, it discusses integrated circuits, logic gates, operational amplifiers, and aspects of signal communication. Overall, it covers essential topics relevant for understanding modern electronics and electrical principles. ;
