So it helps to think of an electrical ... symbol for volts is V. A potential difference of 1.5 volts can be written as 1.5 V. Potential difference is also commonly called ‘voltage’. A ...

However, electrical energy must be changed into other forms of energy before we can use it. The symbol for power is \(P\), it is measured in Watts (\(W\)). The symbol for energy is \(E\), it is ...