Essay on How Power Output Of A Lamp

1102 Words Nov 8th, 2016 5 Pages
Jade

How the power output of a lamp is related to its brightness
When the power in bulb 1 was just 1 bulb in the circuit the power in the bulb was 1.49 this meant that the brightness was at its full brightness. When 2 bulbs were added the power dropped down to 0.46 , which meant that the brightness of the bulbs was less bright. When the 3rd bulb was added the power went down to 0.26 this meant that the brightness of the bulbs were dimmer and not as bright as the first bulb by itself.

How power can be calculated from current and voltage
The power can be calculated from current and voltage by voltage x current this will give you the amount of power being used in each of the bulbs.

How the current from the electrical source relates to the current through the lamps in each type of circuit.
In the series circuit when 1 bulb is added the current was 0.26 this meant that its was the highest reading with 1 bulb. When the second bulb was added into the series circuit its decreased to 0.17 this meant that the current had changed when 2 bulbs were added. When third bulb was added the current decreased more down to 0.14. By adding more bulbs into the series circuit the current decreased each time another bulb was being added.

In the parallel circuit when 1 bulb was added the current measured 0.26 when the second bulb was added into the parallel circuit the current stayed the same the second bulb current measured 0.25. When the third bulb was added into the circuit the current…

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