- material, eg copper, has lower resistance than steel.
- length – longer wires have greater resistance.
- thickness – smaller diameter wires have greater resistance.
- temperature – heating a wire increases its resistance.
What are the factors which affects the resistance of a material?
Resistance is the property of the material that restricts the flow of electrons. There are four factors affecting resistance which are Temperature, Length of wire, Area of the cross-section of the wire, and nature of the material .
What are the 4 factors that affect resistance?
- The type of material of which the resistor is made.
- The length of the resistor.
- The thickness of the resistor.
- The temperature of the conductor.
What are the factors affecting resistance class 10?
- The temperature of the conductor.
- The cross-sectional area of the conductor.
- Length of the conductor.
- Nature of the material of the conductor.
Which factors affect the resistance of a material Brainly?
Answer: Resistance is the property of the material that restricts the flow of electrons. There are four factors affecting resistance which are Temperature, Length of wire, Area of the cross-section of the wire, and nature of the material .
Which is directly proportional to the resistance?
The resistance of any conductor is directly proportional to length and inversely proportional to area of cross-section of the substance. As value of resistance(R) is directly proportional to length of resistance, so by increasing the length of resistance the value of resistance increases.
What causes resistance?
An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.
What is the relationship between resistance and temperature?
As temperature rises, the number of phonons increases and with it the likelihood that the electrons and phonons will collide. Thus when temperature goes up, resistance goes up . For some materials, resistivity is a linear function of temperature. The resistivity of a conductor increases with temperature.
What increases the resistance of a wire?
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. See resistivity. The resistance of a conductor, or circuit element, generally increases with increasing temperature .
What are the effects of temperature on resistance?
The effect of temperature on the resistance of the conductor is directly proportional to each other . The increase in temperature of the conductor increases its resistance and makes it difficult to flow current through it. As discussed above, the movement of free electrons creates the flow of current in the conductor.
How do I calculate resistance?
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I . For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance R T = 9 volts / 3 amps = 3 Ω.
Why resistance is directly proportional to length?
As the length increases , the number of collisions by the moving free electrons with the fixed positive ions increases as more number of fixed positive ions are present in an increased length of the conductor. As a result, resistance increases.
What is the formula of resistance?
The resistance formula is as follows: Resistance = voltage drop across a resistor/ current flowing through a resistor . R = frac{V}{I } R = resistance (Ohms, Ω) V = voltage difference which is between the two ends of a resistor (Volts, V)
What factors affect resistance of a material select 3 options?
The resistance of a given piece of wire depends of three factors: the length of the wire, the cross-sectional area of the wire, and the resistivity of the material composing the wire .
What factors influence the resistance of a resistor describe how each one affects the resistance?
length – longer wires have greater resistance . thickness – smaller diameter wires have greater resistance. temperature – heating a wire increases its resistance.
What would decrease the resistance of wires?
What would decrease the resistance of wires carrying an electric current? ... Current Y has a greater potential difference, and the charges flow at a slower rate .
