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What else can I help you with?
What affects resistance in a circuit?
1.Resistance is dependent on the material.Like wood is insulator(ALMOST infinite resistance). 2.Resistance of a wire having more cross sectional area is less and less cross sectional area is more(i.e. it is inversely propotional to the cross sectional area.) 3.It is more for more length and less for less length. 4. Resistance varies with temprature.For metals like platinum it increses with temprature.
Is A superconductor is A conductor having zero resistance?
Yes, a superconductor is a material that can conduct electricity without any resistance at very low temperatures. This means that once a current is applied, it can flow indefinitely without any loss of energy due to resistance.
What are the factors of good conductor?
Factors that contribute to being a good conductor include having a high density of free electrons, low resistance to the flow of electricity, and a crystalline structure that allows for efficient electron movement. Materials like metals are typically good conductors due to these factors.
Why heater coil glow but supply wire not glow?
Heater coil is made of alloys such as meganin wire ,and is having high melting point .Alloys have high resistance due to which most of electrical energy is converted into heat energy.According to joules law of heating heat produced in a conductor is directly propotional to square of current and is directly proptional to resistance of conductor and time for which current flows.Heater wire does not glow because of having less resistance
Why air is considered as a bad conductor?
Air is quite a reasonable conductor of sound, of radio waves, and of radiant heat. It is not a good conductor of say, electricity, because of the lack of free electrons, which are needed for electrical conduction.
What affects resistance in a circuit?
1.Resistance is dependent on the material.Like wood is insulator(ALMOST infinite resistance). 2.Resistance of a wire having more cross sectional area is less and less cross sectional area is more(i.e. it is inversely propotional to the cross sectional area.) 3.It is more for more length and less for less length. 4. Resistance varies with temprature.For metals like platinum it increses with temprature.
Is A superconductor is A conductor having zero resistance?
Yes, a superconductor is a material that can conduct electricity without any resistance at very low temperatures. This means that once a current is applied, it can flow indefinitely without any loss of energy due to resistance.
What is a conductor electricity?
In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.
Do The resistance of a material generally increases as its temperature increases?
The answer to this depends on the material from which the resistance is made. For most materials resistance increases with increasing temperature. This is referred to as having a "positive temperature coefficient". Some materials have a negative temperature coefficient; these do have uses in electronics.
What is the definition of electrical resistance?
Resistance is the opposition to electric current, expressed in ohms.Resistance is directly-proportional to the resistivity of the conducting material and its length, and inversely-proportional to its cross-sectional area.Alternating current tends to flow towards the surface of a conductor due to the 'skin effect', thus reducing the effective cross-sectional area of a conductor. Therefore, resistance to a.c. is somewhat higher, at normal supply frequencies, than to d.c., and significantly higher at very high frequencies.
What are the factors of good conductor?
Factors that contribute to being a good conductor include having a high density of free electrons, low resistance to the flow of electricity, and a crystalline structure that allows for efficient electron movement. Materials like metals are typically good conductors due to these factors.
Do conductors have high or low current?
Low resistance. Think of Ohm's law. Voltage drop is directly proportional to resistance. The higher the resistance, the higher the voltage drop, and the less voltage that is available for the load. Think of conductor resistance as a resistance in series with the load. Also, higher conductor resistance means more power lost, going to heating the conductors. The "line loss" formula is P=I2R. The greater the resistance, the greater the electrical power being converted into thermal power heating the conductors.
How does the resistance of a conductor compare to that of an insulator?
The resistance of a sample of a conducting substance is less than theresistance of a physically identical sample of an insulating substance.AnswerTo give you some idea of the difference between the resistance of insulators and conductors, a sample of mica (an insulator), just 25-mm long, has the same resistance as a copper conductor, having the same cross-sectional area, but measuring a staggering 14 290 000 000 000 000 000 kilometres long! To put this in perspective, the average distance from the Earth to the Sun is a mere 150 000 000 kilometres!
How does the resistance of a conductor compare to that of a insulator?
The resistance of a sample of a conducting substance is less than theresistance of a physically identical sample of an insulating substance.AnswerTo give you some idea of the difference between the resistance of insulators and conductors, a sample of mica (an insulator), just 25-mm long, has the same resistance as a copper conductor, having the same cross-sectional area, but measuring a staggering 14 290 000 000 000 000 000 kilometres long! To put this in perspective, the average distance from the Earth to the Sun is a mere 150 000 000 kilometres!
What would happen if you had a clogged arterie in your head?
that's called having a stroke
How do you know an electrical circuit has a short in it?
A short circuit is determined by a low resistance between two conductors or between a conductor and the ground. <<>> The circuit's over current protection usually trips resulting in the circuit having no power.
What happens when you have low resistance?
Having low resistance means that there is an easier flow of electric current through a circuit. This can lead to higher current levels which could potentially damage the components in the circuit or cause overheating. It can also result in a decrease in voltage across the circuit.
