Question

A charge of 100 micro coloumb has a potential at a distance of 9 m is

Answer 1

microcoulomb is 10 to the power minus 6 coulomb and 1 by 4 Pi Epsilon Not equal to 9×10^9

Answer 2

Potential at a distance of 9 m is  $10^{5}$  volt

Given : A charge of 100 micro coulomb

Distance of the charge from the reference point is 9 m

To Find : Potential at a distance of 9 m

Solution : Potential at a distance of 9 m is  $10^{5}$  volt

It is given that we have a charge of 100 micro coulomb  = 100 × $10^{-6}$ = $10^{-4}$ Coulomb

We have to find the potential at a distance of 9 m

Electric potential (V) is calculated as

$V = \frac{(k) Q}{r}$

where k is constant  whose value is $9$ × $10^{9}$

Q is charge of the particle

r is distance of the particle from the reference point

Putting all the given values in the formula

Q = $10^{-4}$ C

r = 9 m

k =  $9$ × $10^{9}$

V = $\frac{(9)(10^{9})(10^{-4}) }{9}$

V = $10^{5}$ volt

So potential at a distance of 9 m is  $10^{5}$  volt

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