How is heat produced related to resistance?
Table of Contents
- 1 How is heat produced related to resistance?
- 2 How heat is produced related to current flowing in the circuit?
- 3 What is the relationship between heat and electric current?
- 4 How does the heat produced depend on the current in the conductor if resistance is constant?
- 5 What are the factors on which heat produced due to a current flowing through a conductor depends?
- 6 How does the heat produced by a current passing through a fixed resistance wire depends on the magnitude of current?
- 7 How are heat and energy related to each other?
- 8 How and on what factors the heat produced in the conductor depend?
- 9 What is the heating effect produced by an electric current?
- 10 How does the resistance of a wire affect the heat produced?
- 11 What is the relationship between current and resistance?
As electrons move through a metal conductor, some collide with atoms, other electrons or impurities. These collisions cause resistance and generate heat. Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
When a current flows through a conductor, heat energy generates in the conductor. A higher resistance produces more heat. The time for which the current flows. The longer the time the amount of heat production is high.
How is the heat produced by an electric current?
When an electric current is passed through a conductor, the conductor becomes hot after some time and produce heat. This happens due to the conversion of some electric energy passing through the conductor into heat energy. This effect of electric current is called heating effect of current.
What is the relationship between heat and electric current?
heat is the total energy of the motion of the molecules inside the object or particle, whereas Temperature is merely a measure of this energy. The relationship could be, the more heated an object is there higher the temperature the object will have.
How does the heat produced depend on the current in the conductor if resistance is constant?
The amount of heat produced in current conducting wire, is proportional to the square of the amount of current that is flowing through the circuit, when the electrical resistance of the wire and the time of current flow is constant.
How does the heat produced by a current passing through a fixed resistance?
Resistance is the hindrance or reluctance that, a conductor or the material through which current is flowing, has to offer. This hindrance or resistance in path of current produces heat as byproduct thus more the current more is the heat.
What are the factors on which heat produced due to a current flowing through a conductor depends?
Heat produced by an electric current depends on the following factors: (i) Heat produced is directly proportional to square of current. (ii) Heat produced is directly proportional to resistance. (iii) Heat produced is directly proportional to the time for which current flows.
How does the heat produced by a current passing through a fixed resistance wire depends on the magnitude of current?
Heat produced is directly proportional to the square of current.
How heat and work are related to each other?
Heat and work are two different ways of transferring energy from one system to another. The the distinction between Heat and Work is important in the field of thermodynamics. Heat is the transfer of thermal energy between systems, while work is the transfer of mechanical energy between two systems.
Every time molecules collide, kinetic energy can be transferred. When the two systems are in contact, heat will be transferred through molecular collisions from the hotter system to the cooler system. The thermal energy will flow in that direction until the two objects are at the same temperature.
How and on what factors the heat produced in the conductor depend?
Length,thickness and nature of material. 1-With increase in length of conductor,increases the amount of heat produced. 2-With increase in thickness ,less amount of heat is produced. 3-Good conductors produce less amount of heat while bad conductors produce more heat.
When current is passed through a conductor the heat produced in it depends on?
Answer: When current flows through a conductor, heat energy is generated in the conductor. The heating effect of an electric current depends on three factors: The resistance, R of the conductor. A higher resistance produces more heat.
What is the heating effect produced by an electric current?
The time for which the current flows. The longer the time the amount of heat production is high. Higher the current the amount of heat generation is also large. Hence the heating effect produced by an electric current, I through a conductor of resistance, R for a time, t is given by H = I2Rt.
How does the resistance of a wire affect the heat produced?
Greater the resistance of a wire, greater will be the heat produced in it by a given current. For example : Copper has a very low resistance, so if electric current is passed through a copper wire, then the heat produced in it will be extremely small (due to which the copper wire will become negligibly hot).
What is electric resistance heating?
Electric resistance heating is defined as “the heat produced by passing an electric current through a material that preferably has high resistance.” As the current passes through the material, ohmic losses (I2R losses) occur.
What is the relationship between current and resistance?
Therefore, at constant voltage, the effect of a change in current outweighs the effect of the corresponding change in resistance. For example, decreasing the resistance (which, in and of itself, would tend to decrease resistive heating) causes the current to increase, which increases resistive heating by a greater factor.