Question

By increasing the temperature the resistance of a conductor

• A. increases.
• B. decreases.
• C. remains constant.
• D. initially increases then decreases.

Answer 1

The correct option is A increases.

On increasing the temperature of a resistor the vibrational motion of stationary kernel increases and hence hinder the passage of current.

Thus resistance increases for conductor.

$R=R_o[1+\alpha (T-T_o\left)\right]$

Answer-(A)