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Less resistance dissipates more power because power loss in a resistor is calculated using the formula ( P = I^2R ), where ( P ) is power, ( I ) is current, and ( R ) is resistance. When resistance is lower, for a given voltage, the current increases (Ohm's Law: ( V = IR )), leading to a higher power dissipation. Additionally, lower resistance allows for more efficient energy transfer, resulting in greater power being converted to heat or work rather than being lost in the resistance itself.
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Why do parallel circuits provide more power to the lights?
With several lights in series across the power source, the full voltage of the power source is divided among the group of lights, in proportion to the resistance of each one, and the power available to each light depends on all of the others. The more lights in the series circuit, the less voltage each one gets, and the less power each can dissipate as light. ============================================ Another contributor added: Furthermore, power = voltage times current, and Current is equal to voltage divided by resistance. Putting lights in series increases the circuits resistance, which lowers the current, thus decreases power. This is why the overall light output of two lights in series will be less than a single light.
Why we go for bus bar riser system instead of cables?
It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced. It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced.
Does using transformers to create high voltages reduce wasted energy in power lines?
Yes. The two main reasons are:For a given size of power line more power can be carried by the line at higher voltage and lower amperage with less resistive heating. The heating due to resistance is a waste of energy. This due to Power = Volts X Amps. The higher the Volts the lower the Amps for some amount of Power. The more Amps carried by a conductor the more heat it will produce due to resistance.Since we can use a smaller size of power line to carry a given amount of power we will use less copper or aluminum to make that power line. The less material we use to make the conductor the less energy we have to use to make that conductor. Also the less energy it takes to transport, install, and support that conductor.
Does a starting winding has more or less turns than a running winding?
Starting winding has more resistance and less induction than main winding, this means has smaller diameter and less turns.
If you add an extra bulb to your series circuit what will happen to the brightness of your bulbs?
They will dim because you have more resistance in the circuit. More resistance means less current which means less light. The power is P=V*I = I/R*I = I²/R Think of blowing through one straw. Now attach a second straw end on with no leaks between joints and then attach a third straw in a long line. Which one is the easiest to blow?
Why does largest R dissipate more power?
That's not always the case. One formula for power dissipated is:P = IRSo, a higher resistance means that more power is dissipated - if the current is the same. The reason for this is precisely that resistance is related to the conversion of electrical energy into heat.However, if you put a higher resistance across a specific voltage, you'll get less power dissipation, not more, since less current will flow at a higher resistance.
A thicker resistance wire produces more heat?
I'm not sure what you mean by "thicker resistance" wire? The thicker or more diameter of a wire the less resistance it has. A larger diameter wire would produce less heat. More resistance would produce more heat.
What is the relationship between wire thickness and current?
The thicker the wire, the higher the current the wire is capable of passing. This is due to two things: 1.) the larger wire has less resistance, and 2.) the larger wire has more surface area to dissipate power.
Why do parallel circuits provide more power to the lights?
With several lights in series across the power source, the full voltage of the power source is divided among the group of lights, in proportion to the resistance of each one, and the power available to each light depends on all of the others. The more lights in the series circuit, the less voltage each one gets, and the less power each can dissipate as light. ============================================ Another contributor added: Furthermore, power = voltage times current, and Current is equal to voltage divided by resistance. Putting lights in series increases the circuits resistance, which lowers the current, thus decreases power. This is why the overall light output of two lights in series will be less than a single light.
Which electric heater will yield the greater heat output a large resistance in the coil or a small resistance in the coil?
A small resistance in the coil will yield greater heat output in an electric heater. This is because a small resistance allows for a larger current to flow through the coil, which in turn generates more heat due to the increased power dissipation (P = I^2 * R).
What happen if resistors has high power?
The power rating of the resistor only tells the amount of power it's able to dissipate without overheating, melting, or exploding. The amount of power that a resistor dissipates is determined by its resistance and the current through it (or voltage across it). If you put a small resistor at a place in the circuit where it must dissipate more power than it's rated for, then it'll overheat and possibly fail. If you put a high power resistor at a place in the circuit where it dissipates much less power than it's rated for, then nothing happens at all. It simply takes up more space on the board than was necessary, because it's bigger than what was needed there, and you spent more money than you needed to spend for the kind of resistor that you needed at that place in the circuit.
Copper has more or less resistance than wood?
Much less
Why we go for bus bar riser system instead of cables?
It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced. It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced.
Who has more and less power than daimyos?
Nobody. If they have more power, then they cannot have less. And if they have less, they cannot have more. So nobody can have more AND less.
What are the advantages of cam less engine?
The basic advantage of a cam is that it could dispense with having to recirculate exhaust gas through EGR systems. its is less resistance so more potential power.
What does the word dissipate mean?
Dissipate means to disappear by becoming more and more tenuous or less dense. Hence "A crowd dissipates when the members of the crowd drift away one by one."
What is the relation between the velocity of a moving body and the resistance?
The velocity of a moving body is inversely proportional to the resistance it faces. This means that as the resistance increases, the velocity of the body decreases, and vice versa. More resistance leads to slower movement, while less resistance allows for faster movement.
