what are the four factors that affect the resistance of a substance?

Q: Answer the two following questions: A. Compute the resistivity of the given material whose…

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Q: 2. What is the significance of negative values of voltages and current?

A: Significance of negative values of voltage and current

Q: A certain wire has a resistance of R. The resistance of another wire identical with the first except…

A: The obstruction offered to the smooth flow of current is called resistance. The electrical element…

Q: Describe the relationship between the current and the voltage

A: Ohm's law gives the relationship between the voltage and current. Ohm's law :- Potential difference…

Q: What is the Correlation between Resistivity and Earth Materials?

A: Resistivity is basically a factor that helps in determining the characteristic property of any…

Q: 1. Why is it not necessary to connect a voltage source (like a cell or battery) across a resistor…

A: The explanation is as follows.

Q: What are the factors that affect the value of electrical resistance?

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Q: 3. What is the resistance of a piece of material whose length is 2 cm, area is 4 cm² and resistivity…

A: Given a piece of material with, Length, l = 2 cm Area, A = 4 cm2 Resistivity, ρ=60×10-5 Ω-m

Q: 1- PVC insulating materials can sustain high temperatures in comparison with other insulating…

A: 1. PVC (Polyvinyl Chloride) is one of the most popular thermoplastic polymers that is used…

Q: Determine the magnitude of the voltage required to accelerate an electron to kinetic energy of 75…

A: We know relationship between voltage and kinetic energy .

Q: Using Ohm’s Law, what is the relationship of current, voltage, and resistance ? Explain and use…

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Q: 4. Suggestions to reduce the earth resistance to a desirable value. 5. Draw the resistivity…

A: As per the guidelines given ,we can only provide the solution of one question in multiple type of…

Q: Which material would you expect to have greater resistance, plastic or silver? Explain your choice.

A: Plastic has greater resistance than silver.

Q: Explain and why 20 words, Advantages of Electrical Method for each number. Advantages of Electrical…

A: 1. When compared to the other methods, the electrical method is more effective and takes less time.…

Q: How does ohmmeter measurement compare with voltage measurement? Make it short and concise.

A: The comparison is as follows.

Q: Explain the law of resistance. Explain the effects of temperature on resistance

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Q: The 'skin effecť is a phenomenon experienced when current flows through a metal. Which two of the…

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Q: What is the effect of lenght on resistance

A: Resistance=ρ×LA where ρ is resistivity of material           L is length of wire           A is area…

Q: A. What is the area in circular mills of an aluminum conductor that is 80 ft long with a resistance…

A: Given values are =

Q: .3 Write about Insulation Resistance Test:

A: The explanation is as follows.

Q: What is the difference between Current and Voltage?

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Q: If a wire is drawn out to four times its original length, by how many times would you expect its…

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Q: What is the area in circular mils of an aluminum conductor that is 80 ft long with resistance of 2.5…

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Q: Derive the microscopic model of current. Explain each step carefully with diagram. Hand written.…

A: J=σE , σ where is the electrical conductivity, E is the electric field, and J is the current…

Q: What factors explain the ampacity of the wire

A: The ampacity is defined as the property of the conductor which will carry the maximum amount of the…

Q: A wire having an area of cross section = 4mm² and another wire having an area of cross section 6mm²,…

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Q: Trivia about electricity and how electricity help us in daily lives

A: Electricity- Electricity can be defined as the flow of charge (electrons flow) in a conductor. As…

Q: What is the relationship of voltage,current and resistance? Explain

A: Introduction - Voltage - Voltage is defined as the charge differential between two spots. Current -…

Q: Example: page No. (7) The resistance of the wire in the type used in telephone lines is (35 Ohms per…

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Q: what is the standard SI unit for resistivity

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Q: 1. Conductivity readings are often referenced to a specific temperature typically for comparative…

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: is the only metal that has relative conductance greater than 1?

A: In this question , we have to write about only metal that has relative conductance greater than 1 ..

Q: (i) State the value of the current for which the resistance of X is the same as the resistance of Y…

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Q: The resistance of a 10 ft length of a resistor material having a cross section of 0.00204 in2is 4.1…

A: Given data: l1=10 ft=120 inchl2=12 ft=144 inchR1=4.1 ΩR2=7.1 Ω The expression for the resistance is…

Q: Can you find equivalent resistance?

A: The given circuit can be modified as

Q: 7. Which of the following not TRUE about resistance? When the length of the conductor is doubled,…

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Q: Assuming constant temperature, what happens to the resistance of a material when the cross-sectional…

A: Cross sectional area- The cross sectional area is the area of a circle. Thus the cross section of…

Q: 2. Is there a linear relationship between current and voltage?

A: Ohm's Law- Ohm states that the current in a circuit is directly proposal to voltage and inversely…

Q: A piece of silver wire has a resistance of 10. What will be the resistance of a wire of one-half the…

A: Given that,The resistance of silver wire is,Ra=1ΩThe specific resistance of the wire is 30times of…

Q: 5. Which of the following not TRUE about resistance? When the length of the conductor is doubled,…

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Q: Q1\ What is the meaning of resistance, and why it occurs?

A: Resistance means the ratio of applied voltage to the current flowing through the circuit.

Q: 2. The resistance of a certain conductor , 300 mil diameter and 20 ft long is 200 x10^-3 Q.…

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Q: 3. A wire having an area of cross section = 10sqm and another wire having an area of cross section=…

A: Given data, The value of the cross-section of the first wire is 10 sqm. The value of the…

Q: For a given amount of water pressure, which will flow a greater rate of water: a small (restrictive)…

A: Given :  Pressure = constant      Type of nozzle :   Restrictive nozzle  Unrestrictive nozzle…

Q: The resistance of a wire

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Q: The electrical resistance of a wire depends on few factors. Which option from the table3 that best…

A: Write the formula for the electrical resistance of the wire. Where ρ is the resistivity of the…

Q: how is resistance related to physical parameters

A: Resistance can be described as the property of circuit element which offer the opposition to the…

Q: If the resistance of wires is taken into concideration, will the voltage across each wire be the…

A: The resistance of wire depends on the length and area of cross-section of the wire used. So we can…

Q: A wire has a resistance of 50 ohms. How much is dissipated in the wire if it carries a current of…

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Memory Size

A memory unit is the amount of data that can be stored in a storage unit. Some storage devices are RAM, hard drive, memory card, flash drive, etc. In the age of exponentially growing digital media, knowledge of how computer memory works is a key skill.