Which of the following units is equivalent to a farad?
\[C\]
\[VC^{-1}\]
\[CV^{-1}\]
Which of the following statements applies to a \(10\mu F\) capacitor?
\(10\mu C\) will charge it to \(1V\)
\(1\mu C\) will charge it to \(10V\)
\(1C\) will charge it to \(10\mu V\)
Which of the following expressions gives the energy stored in a capacitor?
\[E = QV\]
\[E = \frac{1}{2}QV\]
\[E = \frac{1}{2}CV\]
A capacitor of capacitance \(470\mu F\) connected to a resistor of resistance \(270\Omega\) is connected to a supply of EMF \(12V\).
What is the value of the p.d across the resistor when the p.d across the capacitor is \(8V\)?
\[4V\]
\[8V\]
\[12V\]
When the p.d. across the capacitor is \(8V\), calculate the charging current.
\[14.8mA\]
\[29.6mA\]
\[44.4mA\]
Calculate the energy stored by the capacitor when fully charged.
\[5.64 \times {10^{ - 3}}J\]
\[33.8 \times {10^{ - 3}}J\]
\[67.7 \times {10^{ - 3}}J\]
Look at the three graphs below:
Which graph shape best represents current against time when the capacitor is charging?
Which graph shape best represents voltage against time when the capacitor is charging?
Which graph shape best represents current against time when the capacitor is discharging?
Which graph shape best represents voltage against time when the capacitor is discharging?