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JEE Main202315 Apr 2023Morning ShiftPhysicsCurrent ElectricityActual

Given below are two statements: Statement I : The equivalent resistance of resistors in a series combination is smaller than least resistance used in the combination. Statement II : The resistivity of the material is independent of temperature. In the light of the above statements, choose the correct answer from the options given below:

Options

  1. ABoth Statement I and Statement II are false
  2. BBoth Statement I and Statement II are true
  3. CStatement I is true but Statement II is false
  4. DStatement I is false but Statement II is true

Correct answer

A. Both Statement I and Statement II are false

Step-by-step solution

The formula for series equivalent resistance is given by R s = R 1 + R 2 + . . . . . . + R n . Hence, the equivalent resistance will be the highest value compared to other resistances. The resistivity of a material is given by, ρ = ρ 0 1 + α Δ T Clearly, the resistivity is dependant on temperature. Hence, this is the right option.

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