Question

Calculate the capacitance of a system that stores 1.0 10-10 C of charge at 100.0 V

Answer 1

Capacitance is charge/volts ratio.  So C=(1.0e-10C)/100V = 1e-12F.  Or 1pF  where pF is picoFarad

Answer 2

Answer : The charge stored in the system is $1\times 10^{-12}\ C$

Explanation :

It is given that,

Stored charge, $Q=1\times 10^{-10}\ C$

Voltage, $V=100\ V$

We know that the capacitance of a system is given by :

$C=\dfrac{Q}{V}$

$C=\dfrac{1\times 10^{-10}\ C}{100\ V}$  

$C=1\times 10^{-12}\ C$

So, the correct option is (C).

Hence, it is the required solution.