0
What happens to its resistance when an electrical device is heated?
Wiki User
∙ 7y ago
That will depend on the temperature coefficient of resistance of the device, which could be positive (i.e. resistance increases with increasing temperature), negative (i.e. resistance decreases with increasing temperature), or zero (i.e. resistance is unaffected by temperature changes).
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
Why Cable gets heated when current flows more than its rated current why?
Because if the rated current is lower than the actual current, it causes resistance to the electrical flow which in turn is dispelled as heat.
What happens to the Eiffel tower when it is heated?
When the Eiffel tower is heated, it expands and becomes wide and taller, but not so much. This will increase the size of the Eiffel tower. It will decrease when it is in Winter.
What does sandstone change to?
That depends on what happens to it. If it is sufficiently heated and compressed it will metamorphose to quartzite.
How were Cahuilla Indian houses heated?
The sweat house were heated with fire.
For metamorphic rock to become igneous rock what steps are necessary?
Metamorphic rock can not become igneous rock, however igneous rock can become metamorphic. This process happens over time as the rocks are shifted, compressed and heated by the Earth.
What happens to electrical resistance of most conductors when heated?
Resistance goes up creating more heat which eventually leads to an open circuit.
What happens to the resistance of a metal when it is heated?
its resistence considerably decreases
What happens to the electrical conductivity of a metal when it is heated?
it wil expand
What happens if a thermistor is heated?
the thermistors respond negatively to the temperature and their resistance decreases with the increase in temperature. Since the resistance of thermistors is dependent on the temperature, they can be connected in the electrical circuit to measure the temperature of the body. Read more: http://www.brighthub.com/engineering/mechanical/articles/53511.aspx#ixzz1FeUDkOgw
How is the air heated in the energy cycle?
Air may be heated using steam, hot water, electrical resistance, warmer air, the warm earth, or a furnace.
What happens when you cool a magnet?
If a magnet is heated to a high temperature it will lose its magnetism.
What car device changes electrical energy into heat?
Electrically heated seats, wing mirror defrosters and rear window defroster.
Why the water gets heated when current is passed through carbon rods in it?
The carbon rods have electrical resistance. Thisi causes them to heat when current is passed through them. The water gets heated by the carbon rods.
What happen to the resistance of a copper when it is heated?
The resistance will go up.
What happens when you apply pressure to a heated bone?
The minerals in the bone produce a weak electrical field that attracts osteoblast
What does electrocoagulation entail?
A heated needle connected to an electrical device is used to cauterize or burn the tubes. Electrocoagulation is the most common method of tubal ligation.
What is the sequence of steps that cause thermal expansion when a balloon is heated with a hair dryer?
Electrical resistance causes wires in the coils to convect heat into the air arround it. With a fan, the device moves the heated air in a stream, which collides with the balloon. The heat is convected through the surface of the balloon, and in turn the heat spreads into the air within the balloon. The air molecules become excited, and thus the internal pressure rises.
