0
Why a smaller diameter wire has more resistance of electric current?
Wiki User
∙ 12y ago
Resistance is defined as a property of materials due to which a material opposes the flow of current through themselves. And Resistance is inversely proportional to area of cross section of conductor. As the cross section area of thin wire is less hence resistance is more. So, as wire diameter increases its resistance decreases and vice versa
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoIf you think of a wire as being like a hose or pipe then you can see how it is easier for water to travel through a larger hose than a smaller hose the same is true for electricity it is easier for the current to travel through a larger wire (less resistance) than a smaller wire (more resistance). The same would happen if you had to crawl through a small tunnel (harder) or could simply walk through a larger tunnel (easier).
Wiki User
∙ 14y agoYes. Than a longer piece of the same wire.
Wiki User
∙ 13y agoExactly the same reason why a six-lane road carries more traffic than a two-lane road.
Think about it.
Add your answer:
Earn +20 pts
Does a wire with a diameter of 0.01 mm have lower resistance than a wire with 0.1 mm?
No, a smaller diameter wire has a higher resistance. The 0.01 mm wire will have 1/100 the cross-sectional area of the 0.1 mm diameter wire, therefore the resistance will be 100 times as high.
What is made of electric current?
It is made out of small particals, smaller than atoms called electrons.
What slows the movement of electrons?
Insulators
Can copper and alluminium wire of same length and diameter have same resistance?
For a single temperature, yes. The copper wire will have a much smaller cross-section than the iron wire. For multiple temperatures, no. Copper and iron have different temperature coefficients for resistivity.
Why does the skin effect in radio frequency caused?
Skin effect is the tendency of an alternating electric current (AC) to distribute itself within a conductor so that the current density near the surface of the conductor is greater than that at its core. That is, the electric current tends to flow at the "skin" of the conductor, at an average depth called the skin depth. The skin effect causes the effective resistance of the conductor to increase with the frequency of the current because much of the conductor does little. Skin effect is due to eddy currents set up by the AC current. At 60 Hz in copper, skin depth is about a centimetre. At high frequencies skin depth is much smaller.
When a wire is made smaller the resistance increases. what happens to electric current?
increase
What happens to an electric current when the wire is made smaller?
Electric current as we usually describe it is the flow of electrons. Current is caused to flow by voltage, which can be looked at as "electrical pressure" that forces electrons to move. Currents can be made smaller or larger by decreasing the voltage across a fixed amount of resistance. As resistance is the quality of "resisting" or "limiting" current flow, we can change resistance to change current. For a give voltage, if we increase the resistance, we can make the current smaller, and if we decrease it, we can make current larger. In electronics, voltage equals current times resistance. E = I x R Also true is that current is equal to voltage divided by resistance. I = E/R As current equals volts divided by resistance, if we change one of them without changing the other, current will change. And in increase in voltage (with no change to resistance) will cause current to go up. The opposite is also true. Also, if we increase resistance (with no change in voltage), current will go down. And the opposite is true here, too.
Do thicker or thinner wires have more Resistance?
Over the same distance the larger diameter wire will have less resistance that the smaller diameter wire.
The flow of electricity can be compared to the circulation of water in a?
A pipe. The volume of water available can be compared to voltage. The diameter of pipe could be compared to resistance with smaller diameter being larger resistance and the flow of water past a point in pipe is equivalent to current flow.
What is current and types of currents?
Current is the amount of electriticy that flows through a conductor. The electric current is determined by two factors: The voltage applied to the circuit, and the diameter ( circular area in mm2) of the wire (conductor). More voltage, more current, the same voltage in a smaller diameter of the wire = less current. / less voltage = less current. / smaller diameter of the wire = more resistance> less current. Load inserted in the circuit has a resistance measured in Ohms = more resistance of the load ( a lamp, for example) = less current. / larger diameter of the wire= more current, because it has less resistance. / All can be easily calculated using the Ohm Law =The interchangeability of the equation may be represented by a triangle, where V (voltage) is placed on the top section, the I (current) is placed to the left section, and the R (resistance) is placed to the right. The line that divides the left and right sections indicate multiplication, and the divider between the top and bottom sections indicates division (hence the division bar).Direct currrent flows only in one direction. Alternating current moves back and forth, usually 50 or 60 cycles per second. It means that one pole is negative or positive 50 or 60 times per second.In electronics, other forms of electric current include the flow of electrons through resistors or through the vacuum in a vacuum tube, the flow of ions inside a battery or a neuron, and the flow of holes within a semiconductor.
What happens to the electric current when the wire is made smaller?
If wire delivering a certain amount of current is made narrower, the resistance of the wire will increase. This will limit current, and the wire will warm up some. If the wire is made shorter, resistance will decrease. The electrical codes have well published limits on the amount of current different types of wire can carry.
When a wire is smaller the resistance increases What happens to the electrical current?
increase
What is the difference of voltage resistance and current as the apply to electric circuit?
E=IxR E- Electromotive Force, measured with voltage - volt - v. I- Current, measured with amperage - amp - a. R- Resistance measured with ohms - (Greek omega symbol) Voltage = pressure. Current = flow. Resistance = opposition to flow such as wire size or load. If electricity was water then the water pump is the voltage. The water flowing through the pipe is the current and the size of the pipe is the resistance. Smaller pipe more resistance.
What is the relationship between the size of an electric current passing through a lenght of wire and its heating effect?
The higher the current, the more heat generated. Also, the smaller the diameter of the wire, the higher the heat. It is important to choose the correct amperage rating of the wire to prevent fires.Another AnswerThe work done by an electric current is the product of the square of that current, and the resistance of the conductor. The resulting heat depends upon the difference between the temperature of the conductor and that of the surrounding air. Remember, heat is defined as the transfer of energy between objects at different temperatures.
Does a wire with a diameter of 0.01 mm have lower resistance than a wire with 0.1 mm?
No, a smaller diameter wire has a higher resistance. The 0.01 mm wire will have 1/100 the cross-sectional area of the 0.1 mm diameter wire, therefore the resistance will be 100 times as high.
How does the material of wire affect the resistance?
Basic: The larger the diameter the less resistance.Deep:R = p (L / A)The resistance is proportional to the length of the wire divided by its cross-sectional area. p is the resistivity of the material in question and varies greatly. Since area (assuming a circular wire) is A = pi * r2 the larger the diameter of the wire the lower its resistance will be.AnswerResistance is inversely proportional to the square of the diameter. So, if you double the diameter, you will quarter the resistance. If you halve the diameter, you will quadruple the resistance.
What is added to a circuit to make the current smaller?
The reduction of voltage or the increase of resistance will reduce the current in a circuit.
