What will be the effect of change in the length and thickness of the electrical wire in the experiment o electric cureent‚potential differance and electric resistance?
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Thickness and length Electrical wires are made in such way that it can sustain with the respective potential difference and current flow through it.
Resistance of a wire causes the flow of current. Resistance of a wire is directly proportional to its length and inversely proportional to its cross sectional area.
If the electrical pressure across a wire or potential difference across a wire kept constant then by increasing resistance causes decrease in rate of current flow , resistance causes voltage drop in it and power is dissipated in form of heat. Thus by creating voltage drop it reduces the rate flow of current in that wire.
If resistance decreases by keeping the length same and increasing the cross sectional area then the rate of flow of current through the wire increases and so that where high current is needed then cross sectional area of the wire should be high and vice versa…
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The length and thickness of electrical wires are made in a certain way that can sustain when the current flows through it and respective potential difference flows. ... Resistance is proportional to the wire's length and with the cross section area of the wire it is inversely proportional.