Four resistors when connected in series give an equivalent resistance of 75 Ω. Three of the resistors have values of 18 Ω, 6 Ω, and 24 Ω, respectively. What is the resistance of the fourth resistor

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.