Physics, asked by eiza, 1 year ago

How resistance varies with temperature?

Answers

Answered by anshiikaa

resistance increases with rise in temperature

eiza: Is there any reason?

anshiikaa: electrons vibrate more randomly thus increases resistance to current flow

eiza: okk thnks

anshiikaa: welcm

arvindkumarmispdkeu0: a certain string which is 1m long will break if the load on it is more than 0.5 kg.a mass of .05 kg is attached to one end of it and particle is whirled round in a horizontal circle by holding the free end of the string by one hand.Find the greatest number of revolutions per minute possible without breaking the string

Answered by sachinarora2001

There are some materials mainly metals, such as silver, copper, aluminum, which have plenty of free electrons. Hence this type of materials can conduct current easily that means they are least resistive. But the resistivity of these materials is highly dependable upon their temperature. Generally metals offer more electrical resistance if temperature is increased. On the other hand the resistance offered by a non-metallic substance normally decreases with increase of temperature.

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