0
It takes approximately 4.184 Joules of heat to raise the temperature of 1 gram of water 1 degree C. 1 Joule is the energy of 1 Watt for 1 second (or 3,600,000 Joules equals 1 Kilowatt-hour). In more real world numbers: It takes 69.7 watts 1 minute to heat a liter of water 1 degree C; or 146.6 watts in 1 minute to heat a gallon of water 1 degree F. A watt is a watt, weather it comes from resistance, radiant or induction. The only variations will come from the efficientcy of the heat source's design and how it is being used.
What else can I help you with?
Is there any theory that can calculate that how much heat can be produced from a convex lens?
A convex lens cannot produce heat. It can focus incident heat to a smaller area so that it is more intense.
How do you calculate contact resistance?
Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.
How to calculate the heat produced in a resistor?
Resistors dissipate heat energy with power P=I2R. Since power is defined as energy gained or lost per unit time, we can solve for the energy lost using E=Pt, where E is energy (joules), P is power, and t is time (seconds).Finally, substituting the definition of power into the equation you get:E=I2RtAnswerWith difficulty. The original answer, unfortunately, tells us the work done on the resistor and not the heat transfer from the resistor, which is what the questioner is asking.The work done on the resistor is the product of the square of the current and the value of its resistance. This will increase the internal energy of the resistor and increase its temperature above that of its surroundings, and heat, by definition, is the energy transferred from the higher temperature resistor to its cooler surroundings.So there are simply too many unknown variables to take into account: the mass of the resistor, the specific heat capacity of the material from which it's made, the temperature difference between the resistor and its surroundings...
A flat iron that has a resistance of 10 ohms is used for about 4 hourshow much heat is produced if the current is 10 amperes?
This can be calculate quite simply using the following steps. First calculate the power loss (as heat energy) from the iron using the relationship: P= I2R, P is power in Watts, I is current in Amps, R is resistance in Ohms. In this case P = 102 x 10 = 1000 W Next convert 4 hours into the standard time unit, seconds. 4 hours = 60 seconds per minute * 60 minutes per hour * 4 hours = 14400s Finally calculate how much heat energy is produced during this time using the relationship: E = Pt, P is power in Watts, E is energy in Joules, t is time in seconds. In this case E = 1000 x 14400 = 14400000 J Or more appropriately 14.4 MJ (megajoules). Hope this helps, Tom
How do you calculate work output for a simple machine?
The resistance force multiplied by the resistance distance.
What is the heat generation formula used to calculate the amount of heat produced in a system?
The heat generation formula used to calculate the amount of heat produced in a system is Q mcT, where Q represents the amount of heat produced, m is the mass of the substance, c is the specific heat capacity of the substance, and T is the change in temperature.
On what factors does the amount of heat produced in an electric wire depend?
The amount of heat produced in an electric wire depends on its resistance, the current flowing through it, and the duration for which the current flows. The formula for calculating heat generated in a wire is H = I^2 * R * t, where H is the heat produced, I is the current, R is the resistance, and t is the time.
What are two ways heat can be produced?
Heat can be produced through combustion, where chemical reactions release energy in the form of heat. It can also be produced through friction, where the resistance between two surfaces moving against each other generates heat.
When current flows through a resistance is heat produced?
Yes, heat energy is produced by the electrons;however small it may be,actually if we consider a resistance then it is an hindered to the flow of electrons,as a result of which the electrons collide with the particles of wire resulting in loss of energy in the form of heat.the equation of heat generated is: H=(I^2 *R*t) where- H=heat produced in joules R=resistance of the material in ohm t=time of current flow in seconds
Why is very less quantity of heat energy produced in the connecting wires?
Connecting wires have low resistance, which limits the amount of heat energy produced when current flows through them. This is due to the relationship between resistance and heat generation (P=I^2R), where low resistance results in lower heat production. Additionally, the wires are usually made of materials that have good conductivity and can dissipate any heat quickly to prevent overheating.
What is relationship between resistance and heat as electricity flows through a wire?
As electricity flows through a wire, resistance causes some of the electrical energy to be converted into heat. The heat produced is proportional to the amount of current flowing through the wire and the resistance of the wire. Higher resistance in the wire will result in more heat being generated.
How is heat energy produced in electric iron?
Heat energy is produced in an electric iron through the process of electrical resistance. When electricity flows through the heating element of the iron, the resistance of the element converts the electrical energy into heat energy. This heat is then transferred to the baseplate of the iron where it can be used for ironing clothes.
Why does electrical resistance cause heat to be produced?
When current flows through a material with resistance, electrical energy is converted into heat energy due to the collisions between electrons and atoms in the material. This increased kinetic energy in the material causes the temperature to rise and heat to be produced as a result of resistance.
Does the amount of heat produced depend on the material of the conductor?
Yes, resistance in a conductor causes energy losses due to heat. Metals such as Gold and Platinum have very low resistance but they are very expensive so Copper and Aluminium are used instead which are much more affordable but have higher resistance.
What is produce by the electric current in order to overcome resistance?
Mass
What form of energy is heat produced by filament?
The heat produced by a filament is primarily thermal energy. When an electric current flows through the filament, the resistance of the filament causes it to heat up, converting electrical energy into heat.
What is joule's law of heating?
The heat produced due to electric current through a resistance is i) directly proportional to the square of the current ii) directly proportional to the resistance value of the conductor iii) directly proportional to the time of flow of current.
