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The resistance of a conductor is NOT dependent on:
Question

The resistance of a conductor is NOT dependent on:

A.

area of cross section of the conductor

B.

current flowing through the conductor

C.

length of the conductor

D.

temperature of the conductor

Correct option is B

Sol: the correct answer is (b) current flowing through the conductor

Key Points:

The resistance of a conductor is determined by several factors:​

Area of Cross-Section (A): The resistance (RR) of a conductor is inversely proportional to its cross-sectional area. As the area increases, the resistance decreases.

                                                         R1AR\propto \frac{1}{A}​​

Length (L) of the Conductor: The resistance is directly proportional to the length of the conductor. As the length increases, the resistance increases.

                                                         RLR\propto L​​

Temperature (T): The resistance of most conductors increases with an increase in temperature due to increased collisions between electrons and atoms.

Material: The type of material (its resistivity) from which the conductor is made also affects its resistance.

Information booster:

the resistance is not directly dependent on the current flowing through the conductor. Instead, the current depends on the applied voltage and the resistance, according to Ohm's Law:

I=VRI = \frac{V}{R}

​​

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