The charge per unit length on a glass rod is 0.00500 C/m. If the rod is 1 mm long, how many electrons have been removed from the glass rod?

3.125 * 10¹³ Electrons

Explanation:

Data provided in the question:

Charge per unit length on rod = 0.00500 C/m

Length of the rod = 1 mm = 1 * 10⁻³ m

Therefore, the total charge on the rod

= Charge per unit length on rod * Length of the rod

= 0.00500 C/m * (1 * 10⁻³ m)

= 5 * 10⁻⁶ C

Thus,

Number of electrons removed

= total charge on the rod : Charge of an electron

= 5 * 10⁻⁶ : (1.6 * 10⁻¹⁹)

= 3.125 * 10¹³ Electrons