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If 2 resistors or resistance 10 ohm and 5 ohm resp r connected in parallel which will get more heated?
The 5 Ohm resistor will have more current passing through it than the 10 ohm resistor. Since the resistors are in parallel the Voltage across each resistor is the same.
Power or the amount of heat in terms of the question can be derived from Power = Voltage * Current.
Ohm's law tells us that the current flowing through a resistor is equal to the Voltage across the resistor divided by the resistance. The formula for power is then the Voltage * Voltage / Resistance.
Since V^2 / 10 is smaller than V^2 / 5 we know that the 5 ohm resistor will always have more power dissipated than the 10 ohm resistor.
What else can I help you with?
Why will the current flow be different in a heated rear screen circuit than a side light circuit?
the heated rear screen circuit has a higher resistance compared to the side light circuit
Why does the resistance decrease in a thermistor when heated?
The resistance of a thermistor decreases when heated because it is a type of temperature-sensitive resistor made from semiconductor materials. As the temperature increases, more charge carriers (electrons or holes) are generated, enhancing the material's conductivity. This increase in charge carriers allows for easier flow of electric current, leading to a lower resistance. Thus, thermistors exhibit a negative temperature coefficient (NTC) behavior, where resistance decreases with rising temperature.
When the thermistor in the circuit is heated the lamp becomes brighter why does this happen?
When the thermistor in the circuit is heated, its resistance decreases due to the negative temperature coefficient of thermistors. This reduction in resistance allows more current to flow through the circuit. As a result, the increased current causes the lamp to receive more power, leading to a brighter illumination.
Why the resistance of semiconductors decreases when it is heated?
The conducter molecules are expanded causing a loss of conductivity resulting in resistance. also the molecules are moving more making it difficult for the current to navigate rush hour traffic.
What is the difference between electric soldering iron and ordinary soldering iron?
An electric soldering iron is heated by an electric resistance coil inside. Others may be heated either by a gas(like propane) flame, or by sticking them in a forge between uses.
What happens to the resistance of a common ohmic resistor when it is heated?
When a common ohmic resistor is heated, its resistance typically increases.
What is heated by tiny resistors or electroconductive plates at the end of each tube in an inkjet printer?
ink
What materials make good resistors?
I only know one material that make good resistor that is STEEL(if not heated)
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
What happen to the resistance of a copper when it is heated?
As copper is heated, its resistance increases. This is due to the increase in collisions between free electrons and copper ions, hindering the flow of electric current through the material.
What happens to the resistance of a metal when it is heated?
its resistence considerably decreases
What happens to the resistance of a copper wire when it is heated?
The resistance of a copper wire increases when it is heated. This is because heating the wire causes the metal ions to vibrate more, increasing collisions with the electrons and hindering the flow of current, therefore increasing resistance.
Why are light bulbs known as resistors?
The light bulb filament is made of a material fundamentally like the material used in resistors.
Why filament gets heated?
Filament gets heated when an electric current passes through it, causing resistance in the filament wire. The resistance converts electrical energy into heat energy, which then causes the filament to reach high temperatures and emit light.
How is the past connected to the future?
The past is connected to the future by its time line.The world in the future will be heated by the sun, then the world comes back together again!
What happens to its resistance when an electrical device is heated?
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).
Why are circuits in home connected in parallel?
You want every electrical device in the house to have equal access to the 117 volt utility supply at thewall outlets. That means that every device in the house must be connected directly to the pair of wiresentering the house from the pole ... which is a pretty good definition of a "parallel" configuration.Another reason, purely pragmatic, for not wiring household devices in series: Just like the old-fashionedtechnique for constructing strings of Christmas-tree lights ... if household devices were connected in series,then every device in the house would have to be switched ON, otherwise none of them would work !If any single device were switched off, then there would be no current path through the series string.And here's another little thing to consider: In a series string, each individual resistance in the stringhas an influence on the current through the string. As a practical matter, that means that if everythingin the house were connected in series, then as the toaster heated up and its resistance increased, all thelights in the house would dim, and the refrigerator would run a little slower. Definitely inconvenient.
