Ammeters and Voltemeters
- most electrical failures are because of TOO MUCH CURRENT PASSING THROUGH THE APPLIANCE.
- ammeters- measures current THROUGH a bulb
- always connected in SERIES with the bulb- this is so the current through them is the same.
- the unit of current is in amps.
- Voltmeters- measures the potential difference (ie VOLTAGE) ACROSS a bulb
- POTENTIAL DIFFERENCE (PD) (ie voltage)- the work done (energy…