When a current is passed through a thin wire filament it gets hot. Insulate the filament in a glass envelope with no air, and the filament glows brightly.
The hypothesis for making your own flashlight could be: "If I connect the wires to the battery and light bulb properly, then the bulb will produce light when the circuit is completed." This hypothesis predicts that by assembling the components correctly, the flashlight will work as intended.
The hypothesis regarding using a lemon to power a light bulb would be that the acidic juice of the lemon can act as an electrolyte to facilitate a chemical reaction with the metal electrodes of the light bulb, generating enough electricity to produce light.
The hypothesis of making a light bulb would involve proposing that passing electricity through a filament enclosed in a vacuum or inert gas-filled glass bulb will cause the filament to emit light due to the filament heating up and glowing. This hypothesis would need to be tested through experimentation to determine its validity.
To build the light bulb.
If there is a bulb, it should work.
There are 3 possible reasons as to why the light bulbs do not work in your refrigerator.Light bulb is blownFaulty door switchesFaulty light bulb fittings
Bad bulb, no power, no ground.
A light bulb dimmer switch works by controlling the amount of electricity flowing to the light bulb. By adjusting the voltage, the dimmer switch can regulate the brightness of the light bulb.
Not really, but the light bulb might not work if it's on and you put it in water.
A good hypothesis for making a flashlight could be that increasing the voltage of the battery will result in a brighter light output, or that using a larger LED bulb will increase the intensity of the light produced.
No
With a light bulb!