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Because of the weather when it become hotter & hotter day-by day ,also change in on the ozone layer can cause the resistant.

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Why does tungsten's resistancechange as it gets hotter?

When heat is supplied to tungsten or for that matter any metal its molecules start vibrating more vigorously and thus collide with each other thus opposing the flow of electrons to a greater extent and so resistance is increased


Does the resistance go higher or lower when a thermistor gets hot?

the therminster will get hotter when the resistance is lowed


Does the resistance of a light bulb filament change after the light has been turned on?

The electrical resistance of a light bulb increases when it is turned on As a resistor, the tungsten light bulb has a positive resistance coefficient. This means that the electrical resistance goes up when the filament becomes hot. For example, a 100 watt light bulb operated at 120 volts - it does not matter if it is AC or DC for this calculation - will have a resistance of 144 ohms when hot and draw .833 ampere. When cold the filament typically has a resistance of only 10 ohms which increases as the filament heats up.


How does the mantle change as you go deeper into the Earth's interior?

The deeper into the Earth you go it gets hotter and hotter.


What happened to the temperature of a liquid as it evaporates?

It gets hotter


How do ladybirds change coulor?

Each time the weather get hotter the ladybird gets lighter


What is hotter land or water?

which gets hotter land or water


Why does air rise when it is hot?

When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.


Why does the resistance in a series circuit which includes a light bulb increase when the bulb lights up?

When the current increases as a voltage is applied to the bulb it causes the bulb's special wire filament to get so hot that it glows very brightly. The heating causes changes in the normal electron lattice of the filament, creating more barriers to the flow of the electrons and therefore the resistance of the wire increases as it gets hotter.


Does the resistance of a filament light bulb change as the bulb gets brighter?

Yes, the resistance of a filament light bulb increases as the bulb gets brighter. This is due to the increase in temperature of the filament, which causes the resistance to go up.


Why does the resistance of a thermistor decrease as the temperature rises?

Some materials have negative temperature coefficients of resistance, and some have positive temperature coefficients. Carbon is an example of a substance with a negative thermal coefficient of resistance, so it's resistance will decrease as it gets hotter.


Why does fashion change every season?

Because it is colder in the winter so you wear hotter and bigger , and jackets , clothes but when it gets hotter in the summer you can just wear shorts and t-shirts