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Answer :

Low resistivity materials are used in transformer, motor and generator windings, transmission and distribution lines, house wiring.

Related questions

Description : High resistivity materials are used in?

Last Answer : High resistivity materials are used in precision instruments, heating elements, motor starters, incandescent lamps.

Last Answer : The resistivity of a metal is a function of temperature because the amplitude of vibration of the atoms varies with temperature.

Last Answer : Addition of 0.3 to 4.5% silicon to iron increases the electrical resistivity of iron.

Description : By increasing impurity content in the metal alloy the residual resistivity always

Last Answer : By increasing impurity content in the metal alloy the residual resistivity always increases.

Description : Gold and silver are (A) dielectric materials (B) low resistivity conducting materials. (C) magnetic materials. (D) insulating materials.

Last Answer : (B) low resistivity conducting materials.

Description : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as

Last Answer : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as Superconductors

Last Answer : The materials having low retentivity are suitable for making temporary magnets.

Description : Materials having resistivity ranging from 1 to 100 ohm. cm is termed as (A) Conductor (B) Insulator (C) Semi-conductor (D) None of these

Last Answer : (C) Semi-conductor

Description : Materials exhibiting zero value of resistivity are known as ______ . (a) conductors (b) semiconductors (c) insulators (d) superconductors

Last Answer : (d) superconductors

Description : What is the correct sequence of the following materials in ascending order of their resistivity ?  1. Iron  2. Silver  3. Constantan  4. Mica  5. Aluminium  Select the correct answer using the codes given below :  (a) 2, 5, 1, 3 ... 5, 3, 1 and 2  (c) 2, 3, 1, 5 and 4  (d) 4, 5, 1, 3 and 2

Last Answer : What is the correct sequence of the following materials in ascending order of their resistivity ?  1. Iron  2. Silver  3. Constantan  4. Mica  5. Aluminium  Select the correct answer using the codes given below :  ... 1 and 2  (c) 2, 3, 1, 5 and 4  (d) 4, 5, 1, 3 and 2

Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.

Last Answer : slightly more than unity

Last Answer : Materials subjected to rapid reversal of magnetism should have high permeability and low hysteresis loss.

Last Answer : Effect of moisture on the insulating materials is to decrease dielectric constant, decrease dielectric strength, decrease insulation resistance, increase dielectric loss.

Description : Piezoelectric materials serve as a source of _____ .

Last Answer : Piezoelectric materials serve as a source of ultrasonic waves.

Description : The material used for a fuse wire should have (a) high resistivity (b) high ductility (c) high melting point (d) low melting point

Last Answer : Ans:(d)

Description : Coke used for the production of calcium carbide should have (A) Low ash content (B) Low ignition temperature (C) High electrical resistivity (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Dielectric (A) Is an electrical insulating material (B) Of low resistivity is preferred (C) Should have high thermal conductivity (D) Need not defy the corrosive action of chemicals

Last Answer : (A) Is an electrical insulating material

Description : The insulating material should have (a) low permittivity (b) high resistivity (c) high dielectric strength (d) all of the above

Last Answer : (d) all of the above

Description : The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron.

Last Answer : (C) Silver.

Description : Which material has low resistivity?

Last Answer : Silver have lowest resistivity then copper then aluminium tungsten then iron...

Last Answer : Substances whose specific resistance abruptly decreases at very low temperature are called superconductors.

Description : Resistivity of saline at various frequencies?

Last Answer : Because you are dealing with more than simple dc theory. Resistance (impedance to be more correct) of an rlc circuit changes with frequency. You will need to correct the impedance for the frequency You are using. ... It won't be perfect but it should give you an idea. That's a quick and dirty way.

Description : What length of an alloy wire of resistivity 5.0x10^-7 Ωm and diameter 0.50mm is required to make a standard 6.0Ω resistor?

Last Answer : Interesting homework question. I’m not knowledgeable about physics, but putting myself in the shoes of someone who is.. Why don’t you post the answer that you got, and show your work, and ask us where you went wrong on the problem.

Description : If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Last Answer : The answer is 'Decrease'

Description : If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Last Answer : answer:

Description : Resistance of a metal rod does not depend on which of the following ? 1) ... resistivity 2) density 3). Length 4), warmth ..... Explain it in a little details ?

Last Answer : Answer : On its density. Because it depends on how close or how far the atom must be seen.

Description : The resistivity of indium arsenide arsenide is `rho=2.5 xx10^(-3) Omega m` and its Hall constant is `C_(H)=10^(-2) m^(3)//c`. Find the concentration a

Last Answer : The resistivity of indium arsenide arsenide is `rho=2.5 xx10^(-3) Omega m` and its Hall ... and mobility of the charge carriers in this material.

Description : Find the time of relaxation between collsion and free path of electrons in copper at room temperature. Given resistivity of copper`=1.7xx10^(-8) Omega

Last Answer : Find the time of relaxation between collsion and free path of electrons in copper at room temperature. Given ... electrons`=1.6xx10^(-4) ms^(-1)`

Description : Given that resistivity of copper is `1.68xx10^(-8) Omega`m. Calculate the amount of copper required to draw a wire 10 km long having resistance of `10

Last Answer : Given that resistivity of copper is `1.68xx10^(-8) Omega`m. Calculate the amount of copper required to draw a ... copper is `8.9xx10^(3) kg m^(-3)`.

Description : A rheostat has 100 turns of a wire of radius 0.4 mm having resistivity `4.2xx10^(-7) Omega`m. The diameter of each turn is 3 cm. What is the maximum v

Last Answer : A rheostat has 100 turns of a wire of radius 0.4 mm having resistivity `4.2xx10^(-7) ... the maximum value of resistance that it can introduce ?

Description : A wire of resistance `10 Omega` is drawn out so that its length is thrice its original length. Calculate its new resistance (resistivity and density o

Last Answer : A wire of resistance `10 Omega` is drawn out so that its length is thrice its original ... (resistivity and density of the material remain uncharged).

Description : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current of 1 A. The resistivity of copper `=1.7xx10^(-8)

Last Answer : Calculate the electric field in a copper wire of cross-sectional area `2.0 mm^(2)` carrying a current ... of copper `=1.7xx10^(-8) Omega`m.

Description : Find the resistance of a hollow cylindrical conductor of length 1.0m and inner and outer radii 1.0mm and 2.0mm respectively. The resistivity of the ma

Last Answer : Find the resistance of a hollow cylindrical conductor of length 1.0m and inner and outer radii 1.0mm and 2 ... the material is `2.0xx10^(-8)(Omega)m`.

Description : Calculate the resistance of a 2 m long nichrome wire of radius 0.321 mm. Resistivity of nichrome is `15xx10^(-6) Omega` m. If a potential difference o

Last Answer : Calculate the resistance of a 2 m long nichrome wire of radius 0.321 mm. Resistivity of nichrome is ` ... wire, what will be the current in the wire ?

Description : The resistance of a conductivity wire of length 1.1 m and of diameter 0.14 mm is `30 Omega`. Calculate its resistivity.

Last Answer : The resistance of a conductivity wire of length 1.1 m and of diameter 0.14 mm is `30 Omega`. Calculate its resistivity.

Description : Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent resistivity of the combination is

Last Answer : Two wires of the same dimensions but resistivities `rho_(1)` and `rho_(2)` are connected in series. The equivalent ... (2))` D. `sqrt(rho_(1)rho_(2))`

Description : A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V battery, the resistivity of wire is

Last Answer : A wire of 50 cm long, `1mm^(2)` in cross-section carries a current of 4 A, when connected to a 2 V ... `4xx10^(-6)Omega-m` D. `1xx10^(-6)Omega-m`

Description : The resistivity of a potentiometer wire is `40xx10^(-8)Omega-m` and its area of cross section is `8xx10^(-6)m^(2)`. If 0.2 A current is flowing throug

Last Answer : The resistivity of a potentiometer wire is `40xx10^(-8)Omega-m` and its area of cross section is `8xx10^(-6)m^(2)` ... . `3.2xx10^(-2)V//m` D. `1V//m`

Description : The temperature (T) dependence of resistivity (rho) of a semiconductor is represented by :

Last Answer : The temperature (T) dependence of resistivity (rho) of a semiconductor is represented by : A. B. C. D.

Description : If the temperature of a semiconductor rises, what is its resistivity?

Last Answer : – Decrease

Description : Nichrome wire is used as a heating element I many appliances because (a) it can be drawn out into wires easily (b) it has high resistivity (c) it resists oxidation in air when red hot (d) both (b) and (c) are correct

Last Answer : Ans:(d)

Description : Kilowatt-hour (KWH) is the unit of - (1) power (2) resistance (3) resistivity (4) energy

Last Answer : (4) energy Explanation: The kilowatt hour (symbol kWh, kW h or kW h) is a unit of energy equal to 3.6 megajoules. If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt hours is the power in kilowatts multiplied by the time in hours.

Description : The resistance of a conductor is inversely proportional to its - (1) temperature (2) resistivity (3) area of cross section (4) length

Last Answer : (3) area of cross section Explanation: The resistance of a current carrying conductor is inversely proportional to the area of cross section of the conductor. This is because the resistance occurs due to the collision of electrons/charged particles.

Description : Which of the listed conditions describes the effect on intrinsic semiconductor operation as a result of a temperature increase? A. Additional heat sinks will be required B. Conductivity will increase C. Conductivity will decrease D. Resistivity will increase

Last Answer : Answer: B

Description : What determines the velocity factor in a transmission line? A. The termination impedance B. The line length C. Dielectrics in the line D. The center conductor resistivity

Last Answer : C. Dielectrics in the line

Description : What determines the velocity factor in transmission line? A. The center conductor resistivity B. Dielectrics in the line C. The termination impedance D. The line length

Last Answer : B. Dielectrics in the line

Description : If the temperature of a semiconductor rises, what is its resistivity?

Last Answer : Decrease

Description : What should be the frequency of measurement of earth resistivity?

Last Answer : As per IS: 3043, 1987, measurement of earth resistivity should be carried out annually or biannually and value should be recorded. 

Description : What is the effect of temperature on earth resistivity?

Last Answer : The temperature co-efficient of resistivity for soil is negative, but it is negligible for temperature above freezing point. Below 0°C the water in the soil begins to freeze and introduces ... the temperature co-efficient, so that as the temperature becomes lower the resistivity rises enormously.