Question

Q1.A system contains five charges +1 C, +2C, -3 C, +4 C and -5 C. The net charge on the system is
a) +10
b) -2 C
c) 2C
d) -1C​

Answer 1

Explanation:

Given:

A system contains five charges +1 C, +2C, -3 C, +4 C and -5 C.

To find:

Net charge on the system?

Calculation:

The net charge of the system can be calculated by algebraic addition of the individual charges.

$\rm \: q_{net} = \sum( q_{i})$

$\rm \implies \: q_{net} = + 1 + 2 - 3 + 4 - 5$

$\rm \implies \: q_{net} = 7 - 8$

$\rm \implies \: q_{net} = - 1 \: C$

So, net charge on system is -1 Coulomb.