Question

What is the value of charge on a body that carries 30 excess electrons?

Answer 1

STEP 1: Given data-

1. Number of excess electrons on body : $n=30$
2. charge on a single electron : $e=-1.6\times {10}^{-19}C$ (The minus sign indicates a negative charge)

Step 2: Total charge value

$q=ne$

where q= net charge , n= number of electron , e= charge on 1 electron

Step 3: Calculating the net charge on the body

$q=ne$

$q=30\times -1.6\times {10}^{-19}C$

$q=-4.8\times {10}^{-18}C$

Therefore charge on a particle with 30 excess electrons is $-4.8\times {10}^{-18}Coulomb$.