Please answer all of the following questions A tungsten wire heats up to nearly

Question

Please answer all of the following questions

A tungsten wire heats up to nearly 1800 K in a lightbulb. What happens to the current, voltage, and the resistance as the wire heats? What happens to the power which must be dissipated as heat as the temperature increases? Students in a physics class create their own analogies for electricity. One student decides to use the Cub Scout Pine Wood Derby as an analogy/model. What might represent the charge, current voltage, wire, or battery? If nothing represents one or more of these items, tell us which items cannot be represented. For the rest, explain how they represent them well. Identify one way this model fails. Double-A rechargeable batteries for cameras now give their ratings as, say 2100 mAhr as well as the usual 1.5V. Which quantity does this 2100 mAhr best describe (power, energy, voltage, current or charge....)

Explanation / Answer

PART 1)

As the wire heats up

the Resistance will increase

Current will decrease

Voltage remains the same

PART 2)

Rate of flow of charge is urrent

and current is voltage divide by wire resistance

so we need these parameters to define charge

PART 3

2100 m A hr = milli Ampere hor

so this is product of current and time

so it will give us CHARGE

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