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What happens to the electrical energy carried by the current when it passes through the filament of a bulb?
Wiki User
∙ 14y ago
it stays there. the electricity travels back and forth through the filament until you turn the lighbulb off.
Wiki User
∙ 14y ago
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What happens when a battery light the light bulb?
When the switch is turned it completes an electrical circuit. The circuit amperage flows through a high resistance filament in the bulb and it starts to glow. The bright glow from the filament and the reflector behind the bulb is what creates the flashlights beam.
What happens when two like poles are placed near each other?
they create an electrical current
What happens to the brightness of a bulb if the volts are increased?
The electrical potential energy increases as the voltage is increased. It further excites the filament in the bulb more than a lessor voltage would. Using good old ohm's law (Voltage = Current x Resistance), a larger voltage applied to a bulb at the same resistance increases the current proportionally and larger currents has the effect to cause higher temps in conductors
Why is a bulb most likely to fail when the current is first switched on?
Light bulb filaments glow rather than burn because of the lack of oxygen within the vacuum of the bulb. Over time, the heating and contracting of the filament and the glass surrounding it creates a leak in the base of the bulb causing the vacuum to be lost and allowing oxygen to enter the bulb. It is during the contracting phase, which happens as the bulb cools after being turned off, that eventually the seal is lost. When this happens, oxygen is allowed to enter and the next time the bulb is turned on, the filament, now exposed to the oxygen, burns out.
What happens when a substance reacts with oxygen?
Typically, that substance becomes oxidized.
What happens to the current in a filament is replaced by a longer wire?
resistance increases
What happens to the electrical energy used to light a light bulb?
It heats the filament (which glows and so generates electromagnetic energy).
What happens when a battery light the light bulb?
When the switch is turned it completes an electrical circuit. The circuit amperage flows through a high resistance filament in the bulb and it starts to glow. The bright glow from the filament and the reflector behind the bulb is what creates the flashlights beam.
What happens to the electric current if the magnet no longer moves in the coil?
The electrical current stops flowing.
What happens to the filament when light bulbs blows?
The filament breaks.
What happens to the filament if the bulbs becomes brighter and brighter?
The bulb gets brighter because the filament is getting hotter. If the filament's temperature gets too high it will melt at some point and fall apart. The current will stop flowing and the bulb will "blow".
When a wire is smaller the resistance increases What happens to the electrical current?
increase
What happens when a rod of iron enters a magnetic field?
It induces an electrical current
What happens to electrical current and voltage in a parallel circuit as you add more bulbs?
Voltage remains constant; current increases.
If you double the energy in a circuit what happens to the current?
Electrical energy = I * V * t Everything else staying the same, the current doubles.
What happens when too much electrical current passes through the metal strip on a fuse?
It will burn out.
What happens when two like poles are placed near each other?
they create an electrical current
