3. A wire has a resistance of 0.75 ohm per ft. at an area of 0.00001 square meter. Determine the resistance of a 200ft long conductor if the area is 0.00003 square meter.

Q: A conductor with a will cause a smaller voltage drop, since its resistance is smaller. O a. large…

A: we know R=ρlA So R∝1A

Q: An aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge (1) What is the…

A: Given Data: l=1.3mArea of the corss section = (3.8mm)2=14.44*10-6 m2ρ(AL) = 2.75 *10-8ρ(cu) = 1.69 *…

Q: The resistance of a wire is 126.48 ohms at 100°C and 100 ohms at 30°C. Determine the temperature…

A: The resistance variation with the temperature is expressed as shown below:  R=R01+α∆t∆t=Change in…

Q: An copper wire has a total length of 2820 inches (in.) and a cross-sectional area of 4in. by 6 in.…

A: It is given that: l=2820 in.l=0.0254×2820l=71.628 mA=4in×6inA=24 in2A=0.00064516×24A=0.0155 m2

Q: The temperature coefficient of resistance at 30˚C of a conductor is 0.003759. If it has a resistance…

A: At T=300C , α=0.003759 At T=250C , R25=1.25 At T=400C , R40=? RT=R0(1+α(T0-TT) At T=25…

Q: show complete solutions please thank u A copper conductor measures 0.60 ohm at 20 degrees…

A: In this question, choose the correct option find the resistance R at the temperature T= 30° if…

Q: Two wires A &B made from two different materials have temperature coefficient of resistance equal to…

A: Two wires A &B made from two different materials have temperature coefficient of resistance…

Q: Problem 13. Some copper wire has a resistance of 2002 at 20°C. A current is passed through the wire…

A:

Q: What is the resistance of a copper bus-bar with the dimensions shown figure below

A:

Q: Calculate the resistivity of a copper conductor having a length of 3 km and a cross-section of 32…

A: So we have to find the resistivity of the given conductor.

Q: 1. Substation 2A have a busbar made of aluminum with a length of 5 meters and a cross sectional area…

A:

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: the resistance of copper wire with a=0.00393/C is 183ohms at 46C, its resistance would be about

A:

Q: Find the conductance of a 500 ft long #12AWG wire made up of copper

A: Given data: Length of the wire l=500 ft The material of the wire: Copper The wire is of type #12…

Q: A copper conductor has a resistance of 15 ohms at 20 degrees celcius. Determine the resistance at 80…

A: A copper conductor has a resistance of 15 Ω at 20°C.here we have to determine the resistance at 80°C…

Q: A length of square conductor that is 0.25 in. on a side has a resistance of 0.0756 ohm. What will be…

A: Resistance is an electrical property of a material that opposes the flow of electrons or current in…

Q: silver conductor has a resistance of 25 Ω at 0 ˚C.

A: Conductor-Materials which have free electrons in valence which can flow when comes under any…

Q: The temperature coefficient of resistance at 30°C of a conductor is 0.003759. If it has a resistance…

A:

Q: 3. The resistance of a conductor having length 1 area of cross section a and resistivity p is given…

A: Given: For a conductor The length is l, area of cross section is a and its resistivity is ρ

Q: temperature

A: In this question , effect of temperature on resistance is given...We have to find out resistance of…

Q: If the length of a conductor is halved, then the resistance of the conductor a. becomes double the…

A: In this we will write effect of length change on resistance...

Q: the resistance of a wire is 126.48 ohms at 100 °C and 100 ohms at 25 °C . determine the temperature…

A: Given at T =100 C , r100 =126.48 At T =25 0 c r25  =100 And c 0 =? Rt =Ro (1+c triangle t) At T…

Q: 3. If a conductor has a resistance of 50mn, so its conductance will be..... .....

A:

Q: A conductor has a size of 500 MCM, what will be its size in square m?

A:

Q: The resistance of a wire is 123.48 ohms at 100 °C and 100 ohms at 30 °C. Determine the temperature…

A: Given data, R1 = 123.48 Ω. T1 = 1000 C. R2 = 100 Ω. T2 = 300 C.

Q: Determine the resistance of a busbar made of copper if the length is 16 meters long and the cross…

A:

Q: certain  electrical conductor was found to have a conductivity of 80.6 percent at 20 degrees…

A: We need to find out resisvity for given conductivity.

Q: Find the resistance of a circular wire that is 0.5-m long with radius of 1mm and has a resistivity…

A:

Q: There is a steel guide bar (According to figure), knowing that its conductivity is 7x106 (ohm - m)-1…

A: According to figure steel guide bar knowing that its conductivity is 7x106 (ohm - m)-1 .…

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).