(a) What current is needed to transmit 1.00×102 MW of power at 10.0 kV?      (b) Find the resistance of 1.00 km of wire that would cause a 0.0100% power loss. (c) What is the diameter of a 1.00-km-long copper wire having thisresistance?                                                                                                            (d) What is unreasonable about these results? (e) Which assumptions are unreasonable, or which premises are inconsistent?

Q: Consider a 1100 W, 120 V megatoaster that perfectly toasts bread every time. a) What is its…

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Q: An engineer wishes to replace a 2.00 m wire with a 35.0 cm wire and use a 11.0 V supply instead of…

A:

Q: An electric car is being designed to have an average power output of 3,500 W for 2 h before needing…

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Q: The temperature coefficient of a certain conducting material is 4.78 × 10-3 (°C)-1. (a) At what…

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Q: A flashlight uses batteries that add up to 4.5 V and has a power output of 0.55 W. (a) How much…

A: P=I2RI=PR=0.55 W4.5 V=0.35 A

Q: A 1300 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater…

A: Power, P=1300 W Voltage, V=115 V To determine(a) Current(b) Resistance(c) Thermal energy produced in…

Q: Nichrome wire is used in some radiative heaters. (a) Find the resistance (in Ω) needed if the…

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Q: A 640-W heating coil designed to operate from 110 V is made of Nichrome wire 0.700 mm in diameter.…

A: a. the resistance of the coil can be calculated as follows,

Q: A certain electric motor draws a current of 43 A when connected to 120 V. (a) What is the motor's…

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Q: The heating element of an iron operates at 110 V with a current of 14 A. (a) What is the resistance…

A: The voltage, current and resistance of a circuit are related as V = iR, where V = the voltage, i =…

Q: A 120 V potential difference is applied to a space heater whose resistance is 17 Q when hot. (a) At…

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Q: A 120 V potential difference is applied to a space heater whose resistance is 15 Q when hot. (a) At…

A: Given  Voltage V=120V Resistance R=15Ω

Q: A toaster operating on 120 V uses a current of 9.3 A. (a) What is the toaster's power consumption? W…

A: Write a given values of this question. V=120VI=9.3At=7min=7×60s=420s

Q: Compute the voltage drop along a 7.0 m length of household copper wire which has a radius of 0.95 mm…

A: Given: Length of wire L=7 m, Radius of wire r=0.95 mm=0.95×10-3 m, Current through wire I=12 A.…

Q: A portion of Nichrome wire of radius 2.60 mm is to be used in winding a heating coil. If the coil…

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Q: The human body can exhibit a wide range of resistances to current depending on the path of the…

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Q: a) A lightbulb has a resistance of 190 Ω when operating with a potential difference of 150 V across…

A: Given that, Resistance of bulb, R=190 Ω Potential difference, V1=150 V Potential difference in…

Q: A flashlight uses batteries that add up to 4.5 V and has a power output of 0.63 W. (a) How much…

A:

Q: The heating element of an iron operates at 110 V with a current of 6 A. (a) What is the resistance…

A: Given that, The heating element of an iron operates at 110 V with a current of 6 A. Then We have to…

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.