Two light bulbs are wired in SERIES and connected to a 12 volt battery. What happens to the current through the battery if a third bulb is added in SERIES? To the power?
1. increase, decreases
2. both increase
3. decreases, increase
4 both decrease
Please explain you answer. Thank You!!
1. increase, decreases
2. both increase
3. decreases, increase
4 both decrease
Please explain you answer. Thank You!!
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All the bulbs would be dimmer (both decrease) because they are having to share the electricity between 3 of them, rather than two.
Think of it as this:
A boy has 6 sweets(electricity) and he gives half to his friend (the second bulb) then another friend (third bulb) comes along and he has to give a third to each, so they all end up with 2 sweets.
Hope it helps!
Think of it as this:
A boy has 6 sweets(electricity) and he gives half to his friend (the second bulb) then another friend (third bulb) comes along and he has to give a third to each, so they all end up with 2 sweets.
Hope it helps!
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4, both decrease.
The current falls because there is more circuit resistance.
Because the circuit current falls, but the voltage remains the same, the power dissipated also falls.
Power in watts = (voltage x current).
The current falls because there is more circuit resistance.
Because the circuit current falls, but the voltage remains the same, the power dissipated also falls.
Power in watts = (voltage x current).