Combination of Bulbs (or Electrical Appliances)
Bulbs (heater, etc.) are in series
Bulbs (heater, etc.) are in parallel
- If n bulbs are in series, Ptotal = P/n
i.e., in series combination, bulb of lesser wattage will give more bright light and PD appeared across it will be more.
- If n identical bulbs are in parallel, Ptotal = nP
i.e., in parallel combination, bulb of greater wattage will give more bright light and more current will pass through it.