Question

In the absence of applied potential, its electric current flowing through a metallic wire is zero because

• A. Electrons remains stationary
• B. Electrons are drifted in random direction with a speed of order of ${10}^{-2}cm$
• C. Electrons move in random direction with a speed of the order close to that of velocity of light
• D. Electrons and ions move in opposite direction

Answer 1

The correct option is B Electrons are drifted in random direction with a speed of order of ${10}^{-2}cm$

In the absence of applied potential, its electric current flowing through a metallic wire is zero because electrons are drifted in the random direction with a speed of the order of ${10}^{-2}$ cm