Question

25.1 capacitance the unit of capacitance is the farad (f). which of the following combinations of units is equivalent to the farad? o (n · m)/(c · s) o cv o n/c o j/c o v/c save for later

Explanation:

Step1: Recall capacitance formula

Capacitance $C=\frac{Q}{V}$, so $1\ F = 1\ C/V$. Also, $1\ J=1\ V\times1\ C$, then $1\ C/V = 1\ J/V^{2}=1\ J/C$.

Step2: Analyze other units

$1\ N/C$ is electric - field strength unit. $1\ C/V$ is wrong as capacitance is $C = Q/V$ not $V/Q$. $(N\cdot m)/(C\cdot s)$ is related to power per charge and not capacitance unit.

Answer:

B. J/C