(a)[2]
What does the root-mean-square (r.m.s.) value of an alternating voltage mean?
(b)
An alternating voltage $V$ is given by $V = 220\sin(120\pi t)$, where $V$ is measured in volts and $t$ is in seconds. For this alternating voltage, determine:
(b(i))[1]
the maximum voltage.
(b(ii))[1]
the root-mean-square value of the voltage.
(b(iii))[1]
the frequency value.
(c)[2]
In part (b), the alternating voltage is connected across a resistor, and the resistor’s mean power output is $1.5\,\text{kW}$. Calculate the resistance of the resistor.