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What is Hot Resistance?

Updated: 10/18/2022
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Hot resistance is your total resistance you can have with out exceeding your wattage limit

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Q: What is Hot Resistance?
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How does temperature affect resistance of a wire?

If you are asking if a hot wire has a greater resistance than a cold wire then the answer I would say is yes. Cold wires have always had less resistance than hot wires


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 much current is needed to light a bulb with 180 ohms of resistance using 120 volt power source?

V = I x R so current I = 1/2 amp. I bet the bulb is rated at 60 W because Watts = Current x Voltage. Where V = voltage (volt) I = current (ampere) R = resistance (ohm) Your question isn't easy to answer. A lamp has two 'resistances': a 'cold' resistance, and a 'hot' resistance. Before it is energised, it is cold, so its resistance is low; when it is energised, it becomes very hot, and its resistance increases significantly. So, the question is whether your '240 ohms' is the cold resistance or the hot resistance. If it is the cold resistance, then a current of 0.5 A will flow through it for a fraction of a second, then its resistance will increase significantly, and the current will fall to a very much smaller value.


Will the current reaching a lamp after passing through a resistor in series be equalwhy?

A: Because both item are connected is series. Any resistance connected in series will carry the same current no matter of the resistance value or the number of resistors. However for an incandescence lamp the value will change when turn on and change when it is hot, That is because lamps have different property then resistance when cold and hot


Does increasing the resistance increase the electric current?

If the current through a pure metallic conductor causes the temperature of that conductor to rise, then its resistance will increase. A practical example of this is an electric lamp. The cold resistance of a lamp is very much lower than the hot resistance.

Related questions

What are cold resistance and hot resistance?

Metals heat up as electrical currents flow through them. Cold resistance is the metals resistance before it is operating. Hot resistance is the metals resistance after operating time has elapsed some.


What do you mean by 'cold resistance' and 'hot resistance'?

Metals that make up typical resistors (and many other electrical components for that matter) tend to heat up as current flows through them. "COLD" resistance is the resistance before it is operating and "HOT" resistance is the resistance after some operating time has elapsed.


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

the therminster will get hotter when the resistance is lowed


How does temperature affect resistance of a wire?

If you are asking if a hot wire has a greater resistance than a cold wire then the answer I would say is yes. Cold wires have always had less resistance than hot wires


What is the resistance of a fuse bulb?

A lamp has two resistances: a 'hot' resistance (its operating resistance) and its 'cold' resistance (its resistance when switched off), and the hot resistance is significantly higher than its cold resistance.You can calculate its 'hot' resistance from its rated power and its rated voltage (assuming that it is being supplied at its rated voltage), by manipulating the following equation, to make Rthe subject: P= V2/RYou will, though, have to measure its cold resistance.


Why doesn't the wire get hot in a circuit going from a battery through a light bulb?

Actually the wire WILL get hot, but specifically HOW MUCH it gets hot depends on the current, and on the resistance of the wire.In most circuits, the resistance of the wire (and thus, the amount of heating) is insignificant, and can safely be ignored for most calculations.


Is the resistance lower if you have a high current?

Lower than what? For the same voltage, a lower resistance means higher current. But beware, the voltage itself might depend on the current - thus - with a fixed resistance if you change the voltage, you will increase the current in the same proportion. Some things become higher resistance if they get hot (a tungsten filament in a lamp). Other things become lower resistance if they get hot (semiconductors). So it can all depend on what kind of circuit you have.


Why current carrying wires become hot?

Resistance. Need larger gage wire


Does it make sense that one would gain a resistance to hot temperature foods by repeatedly burning their tongues?

It would make sense to gain resistance to hot temperature foods by repeatedly burning their tongues because the tongue is a muscle that has muscle memory...it will develop an insensitivity to hot or spicy foods if the exposure was done on a regular basis. the tongue like other muscles in the body will learn to adapt.


Can hot air or cold air effect how far a person hits a golf ball?

Yes, in hot air the air is a lot thinner so there is less resistance compared to cold air which is a lot denser so more resistance.


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 do you check the temperature sensor on a 1989 Ford F150?

The sensor can be checked for resistance with an ohm meter. The sensor can be checked while cold then hot for resistance change.