Physics, asked by brainliest2021, 3 months ago

A body has a charge of -2µC. If it has 2.5x10^13 protons, the how many electrons the body has?​

Answers

Answered by Sayantana
7

Atoms:

》Atoms are neutral because they have equal no. of electrons and protons, by which Net charge = 0.

Charge in object:

》object get charged by either losing or gaining electron.

  • excess of electron - negatively charge.
  • deficiency of electron- positively charged.

Solution:

• In the ques the object is negatively charged, so it has excess of electrons .

• So when the bòdy is neutral, it has electrons equal to protons,i.e, 2.5×10¹³.

• Now that it is charged it will have some extra more electrons, that has charge, Q = ne

Total electrons = 2.5×10¹³ + ne

\ Q = ne

\ n = \dfrac{Q}{e}

\ n = \dfrac{–2×10^{-6}}{–1.6×10^{-19}}

\ n = \dfrac{2}{1.6} × 10¹³

\bf n = 1.25×10¹³

》Total electrons = 2.5×10¹³ + 1.25×10¹³

Total electrons = 3.75×10¹³

so, bòdy has 3.75×10¹³ no. of electrons.

Similar questions