The equivalent resistance between A and B in the following figure is-

When temperature of the conductor is increased, then the collision frequency between current carries ( electrons ) and atoms increases. This results in

$10$ wires (same length, same area, same material) are connected in parallel and each has $1\Omega$ resistance, then the equivalent resistance will be

কোন উষ্ণতায় একটি তারের রোধ 0°C উষ্ণতায় রোধের দ্বিগুণ হবে? তারের রোধের তাপীয় গুণাঙ্ক 3.9×10^-4/°C।

Two resistors of resistance $R_{1}$ and $R_{2}$ having $R_{1} > R_{2}$ are connected in parallel. For equivalent resistance $R$ , the correct statement is