What is the total resistance of the two resistors connected in parallel, as shown in the diagram, when r1 = 46 ohms and r2 = 52 ohms?

= 24.408 Ohms

The two resistors connected in parallel, therefore to calculate the effective or total resistance we use the formula;

1/Rt = 1/R₁ + 1/R₂

      = 1/52 + 1/46

Total resistance = (52 × 46) ÷ (52+46)

                           = 24.408 Ohms

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d. platinum would have the greatest temperature increase because it has the lowest specific heat.