Electrical Circuit
Electricity and Magnetism
Voltage and compound quantities
Teaching Guidance
for 11-14
Use terms interchangeably
As these new ideas about voltage are first introduced, it is helpful if sometimes you refer to volt
and sometimes joule per coulomb
, or volt
and sometimes watt per ampere
. By using the terms interchangeably in this way, the underlying meaning of voltage is continually made explicit:
Teacher: OK, so the reading on the voltmeter is 1.4 volt, it's 1.4 joule / coulomb.
Teacher: OK, so the reading on the voltmeter is 1.4 volt, it's 1.4 watt / ampere.
