A photoresistor or light dependent resistor (ldr) is a resistor whose resistance decreases with increasing incident light intensity in other words, it exhibits photoconductivity. A varistor is a voltage dependent resistor (vdr) the resistance of a varistor is variable and depends on the voltage applied the word is composed of parts of the words “ var iable res istor ”. When resistance increases in a variable resistor, the amount of current that is allowed to flow in a circuit decreases two basic components make up variable resistors the resistive material is the first component and is called the element. Varistor is a voltage dependent resistorthe resistance of a varistor is varied depends on the voltage applied metal film resistors), & variable resistors (wire .
How to measure resistance of a piece of wire my suggestion for the temperature dependent part would be to measure the resistance of the wire with it in boiling . Dependent variable in the y-axis, the variable that changes as a result of of the independent variable this is what you measure and observe in the experiment (ex the height of the plants). It is possible to connect to the slider and one end to provide a resistor with variable resistance wire wound: this resistor type is generally reserved for high . - dependent variables are quantities you are measuring to determine if there is an effect from the independent variable you do not manipulate the dependent variable directly you are changing the independent variable and seeing if the dependent variable changes because is depends on the independent variable.
The picture shows a sketch of a light dependent resistor on the left and the symbol on the right description a light dependent resistor (ldr) is an electronic component whose resistance decreases with increasing incident light intensity. An investigation into the resistance of a wire - gcse physics coursework introduction in this article i will investigate what affects the resistance of a wire . The voltmeter will be used to measure the voltage across the constantan wire to calculate resistance so i can acquire resistivity to the nearest 0 variable in . In addition, the power rating of a high power wire wound resistor is 500 watts and the available resistance value of these resistors are is 01 ohm – 100k ohms construction of wire wound resistors advantages and disadvantage of wire wound resistors.
Experiment: resistance and current in a light bulb wire thickness/length the dependent variable is the voltage across the light bulb filament. 2 2-wire resistance measurements (dependent on range, i would add a formula for calculating the resistance in variable lengths and diameters in wires . Resistance and resistivity resistance is the electric property that impedes a current copper wire may have a resistance of of a thermistor’s temperature . A variable resistor works by adjusting the path that current has to flow inside the resistor is a strip of metal or conducting ceramic which is connected to one part of the circuit the dial you turn will move another piece of wire inside the resistor. Introduction to anova - duration: independent and dependent variables made easy - duration: 5:35 identify independent variable and dependent variable on various representational modes .
Ldr, an acronym for light dependent resistor is a resistor whose resistance is dependent on lightin this project, resistance of ldr is of the order of mega ohms in the absence of light and reduces to a few ohms in presence of light. Although it is temperature dependent, it can be used at a given temperature to calculate the resistance of a wire of given geometry it should be noted that it is being presumed that the current is uniform across the cross-section of the wire, which is true only for direct current. The dependent variable is the resistance, and the independent variable is the length of the wire as the length of the wire doubles, so does the resistance this can be proved by showing the resistance of the wire when it is 50cm and 100cm.
Preet kaur: physics report- resistance myp5 ib a 20cm wire and a 40cm wire o dependant variable: the variable i choose which is dependent on the independent . If the sliding contact is at terminal b, the charge has to pass through several turns of resistance wire before leaving with more resistance in the circuit, the current in the circuit is less this type of variable resistor can be used in a circuit as shown in fig21. Independent variable dependent variable resistivity of a wire i introduction the resistance of an electrical conductor depends on several factors its . The length of eureka wire acts as the resistance in the circuit b by adjusting the power supply, you can vary the pd across the eureka wire the ammeter will show corresponding values of the current through the wire.