What is a Resistor? An electric resistor is a two-terminal passive component specifically used to oppose and limit current. A resistor works on the principle of Ohm’s Law which states that voltage across the terminals of a resistor is directly proportional to the current flowing through it. Ohm’s‚Law: v=IR where V is the voltage applied across resistor‚ I is the current flowing through it‚ and R is the constant called resistance. The unit of resistance is ohms.
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Controlled Assessment ISA (PU 2.5) Light Dependent Resistors (Section 1) 1. Write down your hypothesis. Explain why you made this hypothesis. Hypothesis: When it is day there is more light hitting the LDR and so its resistance decreases and the light turns off. When it is night there is less light so the LDR has higher resistance and the light turns on. Explanation: When light shines on a Light Dependent Resistor‚ electrons are released and the current can get larger. So as the light intensity increases
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Table of Contents TOPIC | PAGE | Resistors | | Definition | 1 | Usage | 2 | Classification and Types | 2 | Configuration | 5 | Generalization | 6 | Capacitors | | Definition | 7 | Usage | 8 | Classification and Types | 8 | Configuration | 10 | Generalization | 11 | Inductors | | Definition | 12 | Usage | 13 | Classification and Types | 13 | Configuration | 15 | Generalization | 16 | Resistors Definition A resistor is a passive two-terminal electrical
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ECT 122 Week 3 iLab #1 Parts: Breadboard DC Power Supply Hand Held DMM Test leads Wire 1.0kΩ resistor 2.2kΩ resistor 3.3kΩ resistor 1. Identify the type of the following circuits as either serial or parallel. 2. List four characteristics of a series circuit. * Resistance: The total resistance is equal to the sum of the individual resistances. * Current: The current at any point in the circuit equals the current at all other points. The value of current depends on the
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Title: Resistors in Series and Parallel Date: 17/7/05 Aim: The aim of this experiment is to compare the predicted and actual resistance in a circuit of resistor combinations in series and in parallel. Background: A resistor is an electrical component/device that has electrical resistance. Resistors can be used in electric circuits for protection of components‚ voltage division or current control. In an ideal resistor the resistance remains constant regardless of the applied voltage or current
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At the end of the period‚ the students are expected to: 1. Identify the color coding of resistors; 2. Compute for resistance of a color-coded resistor; 3. Compute for minimum and maximum tolerance of a resistor. II. Subject Matter: Topic: Resistor Color Coding Reference: Technology and Home Economics II Luz Villanueva et. al pp. 200-203 Materials: Visual Aids Resistors Values Integration: Orderliness and Patience III. Procedure: A. Preliminary Activity Prayer
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Different Types of Resistors Electrical engineering involves the study and development of different electrical technologies‚ which are used for different purposes. One device that is very common in engineering and in electrical engineering is a resistor. A resistor is nothing but a special electrical component that helps in the induction of electrical resistance in a given electrical circuit. The resistors can be made up of different elements and different materials and it depends on the applied
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Define the following: RESISTOR A resistor is a component of a circuit that resists the flow of electrical current. It has two terminals across which electricity must pass‚ and it is designed to drop the voltage of the current as it flows from one terminal to the other. Resistors are primarily used to create and maintain known safe currents within electrical components. Resistors are coated with paint or enamel‚ or covered in molded plastic to protect
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Diagram: Here is the schematic for the circuit: Light Dependent Resistors Light Dependent Resistors (LDR) are also called photoresistors. They are made of high resistance semiconductor material. When light hits the device‚ the photons give electrons energy. This makes them jump into the conductive band and thereby conduct electricity. A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident
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OF A RESISTOR-INDUCTOR (RL) CIRCUIT TOM CARNEY Table of Contents 1. Introduction………………………………………………………………………………….Page 2 2. Theoretical Analysis………………………………………………………………………Page 3 3. Questions related to constructed circuit……………………………………….Page 5 4. Conclusion…………………………………………………………………………………….Page 6 5. Works cited……………………………………………………………………………………Page 6 6. Illustrations…………………………………………………………………………………….Page 7-8 Transient Analysis of a Resistor- Inductor
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