Hello!
1.
b)
i)
We can calculate the charge flow using the following relation:
[tex]Q = I * t[/tex]
Q = Total charge (C)
I = Current (A)
t = time (s)
Plug in the given values to solve.
[tex]Q = 2 * 300 = \boxed{600 C}[/tex]
ii)
We can calculate the total electrical energy using the equation:
[tex]E = \frac{1}{2}QV[/tex]
Q = Charge (C)
V = Potential difference (V)
E = Energy (J)
Plug and solve.
[tex]E = \frac{1}{2}(600 * 12) = \boxed{3600 J}[/tex]
2.
a)
We can use the same equation as above to solve for the charge.
[tex]Q = I * t\\\\Q = 0.20 * 20 = \boxed{4 C}[/tex]
