Variables: (a) Manipulated variable: Length of wire, l (b) Responding variable: Resistance, R (c) Fixed variable: Thickness, type of wire and temperature of wire Operational Definition: The resistance, R of a conductor is given by the ratio of the reading of the voltmeter to the reading of the ammeter. Aim: To investigate the factors affecting resistance. The resistance, R of a conductor is defined as the ratio of potential difference, V across the conductor to the current, I flowing through it. The 100 cm long constantan wire with s.w.g. Resistance is the opposition that a substance offers to the flow of electric current. The measure of a material’s ability to oppose current flow is also known as the resistivity, p of the material. The hypothesis is accepted. The same electrical circuit as shown in Figure is used. Filed Under: Physics Tagged With: Effect of temperature on the resistance of a conductor, Effect of the area of cross-section on the resistance of a conductor, Effect of the length on the resistance of a conductor, Effect of the nature of material on the resistance of a conductor, Electricity, Factors Affecting Resistance of a Wire Experiment, Factors on which resistance of conductor depends, factors that affect the resistance of a conductor, How does temperature affect resistance, How does Temperature Affect Resistance Experiment, How does the Cross Sectional Area Affect Resistance Experiment, How does the cross sectional area affect the resistance, How does the Length of the Wire Affect Resistance Experiment, How does the length of the wire affect the resistance, How does the Type of Material Affect Resistance Experiment, How does the type of material affect the resistance, Resistance, Resistance Of A Conductor, resistance of conductor depends, What are the factors that affect the resistance of a conductor? The electrical circuit as shown in Figure is set up.

Please check the box if you want to proceed. 34. Resistance is low in substances, such as metals, that are good conductors, and high in materials, such as plastic and rubber, that are insulators. electrical phenomenon - a physical phenomenon involving electricity. These collisions tend to slow down the speed of the electrons and hence oppose the flow of electric current. 30 and s.w.g. Method: Discussion: The brightness of the bulb corresponds to the temperature of the bulb.

Conclusion: The resistance of a filament increases as its temperature increases. Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.
While the electric potential difference established between the two terminals encourages the movement of charg… In an AC circuit, the resistance and reactance combine vectorially to yield impedance. The thicker the wire, the lower the resistance. The resistance, R of the wire increases with its length, l. Hypothesis: For a fixed length of a conducting wire, the thicker the wire, the smaller the resistance.
of a wire corresponds to its diameter. We'll send you an email containing your password. Current is the change in charge over the change in time. Is directly proportional to its length, l (R∝ l), Is inversely proportional to its cross-sectional area, A (R ∝ 1/A), Depends on the type of material or the resistivity, ρ. 1. electrical resistance - a material's opposition to the flow of electric current; measured in ohms. Many electrical elements, such as diodes and batteries do not satisfy Ohm's law. 34), 50 cm copper wire (s.w.g.

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