Why does a wire not simply cut a block of ice in two when it passes through the ice?

Q: Insulators like home insulation, comforters, styrofoam, drink cozies, and puffy coats all work by…

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Q: An insulator is a material in which electrons are not able to move easily. a. true b. false

A: Materials that do not allow electricity to pass through them are called insulators. There are no…

Q: when our bodies are hot they produce sweat, which helps to cool us down. Using this fact determine…

A: Our body skin is insulator as well as conductor depending on the situation. If outside temperature…

Q: 12. Seawater has ɛ, = 80. Its susceptibility is (a) 81 (b) 79 (c) 5.162 x 1010 F/m (d) 7.074 × 10-1º…

A: Susceptibility is a dimensionless quantity used for dielectrics, which gives an idea about the…

Q: The base of an electric iron is brightly polished mainly so that ........ ?

A: An electric iron, converts Electrical energy to Heat energy.

Q: Why does the conductivity of metals decrease with increase in temperature?

A: Decrease in conductivity of metal with the increase in temperature: In metals, there are free…

Q: The temperature of copper wire is raised. Its esistance remains the same Ɔ a. decreases increases Ɔ…

A: As the temperature of the copper wire is increased . The flow of electrons is interrupted due to…

Q: involves no contact and uses only insulators. O friction O gavity O poplarization O-uduction

A: Induction charging is used to charge an object without touching the object to any other charged…

Q: Two safety pins, identical except that one is latched and one is unlatched, are placed in identical…

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Q: Consider a water pipe that branches into two smaller pipes. If the flow of water is 10 gallons per…

A: The flow of water in main pipe,

Q: I,= 2A in エ,=4A in ーlm

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Q: Diffusion is a direct consequence of: a. electrical interactions between moving charges O b. a smart…

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Q: T.12&13 Please help me answer these two physics questions

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Q: 4 Conductivity of Select Materials Conductivity Material (1/(2 m)) Aluminum 3.77 x 107 Copper 5.95 x…

A: If conductivity of  material will be large then it's resistance will be low and therefore energy…

Q: Name different types of rectifier.

A: Rectifiers are electrical devices which contain one or more diodes to allow the flow of current only…

Q: Why do electrons in insulators not contribute to its conductivity?

A: Insulators are materials having zero number of free electrons. Thus there are o free electrons to…

Q: Can a diamond conduct electricity?

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Q: Ex -rys d aanelength to Pm are scaltered hrom a tanget seatered chrongh L15.6) hnd he, makimam…

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Q: Across a 80W PV module how many numbers of 15W lamps can be connected a.3 b.4 c.5 d.6

A: solution as

Q: You are working in a factory that produces long bars of copper with a square cross section. In one…

A: The induced emf in the coil will be: From Ohm’s law:

Q: The resistance of a rod is INDEPENDENT of: O Its length. O Its material. Its temperature. O Its…

A: Introduction: The resistance is the property of the material which resists the flow of electric…

Q: Why is a small gap left between railroad tracks instead of welding them together

A: A small gap is left between railroad tracks .

Q: is a simple device consisting of fusible link or wire of low melting temperature

A: is a simple device consisting of fusible link or wire of low melting temperature

Q: why is lightning categorized as plasma? A. It consists of tightly packed particles  B. it has a…

A: Given : why is lightning categorized as plasma? A. It consists of tightly packed particles  B. it…

Q: Why is non-ohmic devices for a bulb?

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Q: Why is it advisable to allow telephone wires to sag when stringing them between poles in summer?

A: Why is it advisable to allow telephone wires to sag when stringing them between poles in summer?

Q: Their clothes tend to stick together after they pass through the dryer. Because? Do you expect that,…

A: The clothes after spinning in a dryer cling to each other due to the friction between clothes or…

Q: Why is platinum used for making resistance thermometer?

A: which is help to give precise reading and morover the platinum is stable unreactive metal can be…

Q: Grike cleiter: Distames= 15 m . =25 N Caleululi W corrk done?

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Q: Substance I n = 1.33 Substance II n = 1.50 Substance III n = 1.00

A: Total internal reflection is when refractive angle becomes greater than 90° So for nearest angle of…

Q: |-2.5j -2.6k =--J-k Ib, and S = 10.51-3.9J-0.7k Ib, which are concurrent at etermine the resutant of…

A: Resultant

Q: 2Ω 4Ω www Ε 6Ω 4Ω. ,5Ω Α Β

A: Here, 2Ω resistor and the 4Ω resistor between the points C and E are in series. So, their equivalent…

Q: What is the heat produced in a conductor in 15.5 s if there is a current of 9.5 A and a resistance…

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Q: What are the similarities and differences between the processes in a photocopier and an…

A: The photocopier is a device which is used to create a copy of any document which is known as a…

Q: What is energy gap in insulators?

A: The energy gap or band gap is the difference between the highest energy level of the valence band…

Q: Which of the following represents the characteristic curve of a copper wire?

A: Current is defined as a charge flowing through a circuit per unit of time.

Q: A material that conducts electricity but not as well as a metal but better than a non metal is

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Q: what contains a piece of metal that bends when it gets hot

A: A breaker contains a small piece of metal that bends when it gets hot.

Q: Why is it dangerous to use an electric shaver while taking a bath?

A: When a person bathes, the person uses the water. Water is the good conductor of heat and…

Q: Why do you need a rectifier?

A: A rectifier is an electrical component which converts alternating current to direct current.…

Q: The tendency for a material to oppose the flow of electrons, changing electrical energy into heat…

A: Resistance arise when free electron collied with atoms or molecules.if more the collision occurred…

Q: An incandescent lightbulb is an inexpensive but highly inefficient device that converts electrical…

A: Given Data: The diameter of the light bulb is, D=10 cm The power of the light bulb is, P=100 W The…

Q: If the voltage and current are reduced by a factor of 2 each, for how much time must the goose be…

A: Power in electric circuit is given by,  P=VI Heat Energy by electricity is given by,   P=Et E=VIt It…