Resistor Value Resistance 1* Band 2nd Band 3rd Band 4th Band 2 (Ohm) range, 2 Tolerance Brown Black Black Silver Red Brown Brown Gold Orange Red Red Gold Yellow Silver Orange Yellow Orange Yellow Green No color Dl Ci

Q: .A copper wire of unknown length has a diameter of 0.25 in. and a resistance of 0.28 ohm. By several…

A: This question belongs to basic electrical . It is based on the concept of formula of resistance .…

Q: A copper bar has a length of 20 ft. width of 4 inches and thickness of 0.5 inch. If the resistivity…

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Q: 2. An incandescent light bulb uses a cold filament of tungsten that is 580 mm. long with a diameter…

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Q: A silver wire has a resistance of 2.1 22 at 27.5 °C, and a resistance of 2.7 22 at 100 °C. Determine…

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Q: What is the resistance of this 5-Band resistor ( in Ohms)?

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Q: Which of the following increases its resistance if the temperature increases? I. Conductors II.…

A: I. Conductors - A conductor readily carries electricity because it provides minimal  resistance to…

Q: A 81 fC is placed inside a cube. What is the amount of electric flux passing through each side?(…

A: Q = 81 fC = 81×10-15 C consider a cube and a charge of magnitude Q placed inside it. total flux…

Q: 5. Determine the total resistance if each Ris 30. RT M

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Q: 1-If the area of the wire increases by 0.5, then the resistance of the wire changes by?a.No…

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Q: 15 The unit of current is: (a) coulomb (c) volt (b) ampere (d) joule

A: Brief description: For the above question we need to find SI unit of current.

Q: finding the tolerance value of green blue green and gold

A: green→5blue→6green→100kgold→5%( tolerance band)

Q: this is both copper., Can you explain the changes when I changed the WIRE GAUGE SIZE FROM THICK TO…

A: Given,

Q: Determine the resistance of a bus bar made of copper if the length is 10 meters long and the  cross…

A: Busbars are often situated inside switchgears, panel boards, or busways and serve to conduct a large…

Q: Resistivity of a wire depends on length material O all of the above. O O O

A: Resistivity of the wire calculated as : R=ρlAwhere,ρ = resistivityL = LengthA= area

Q: 1) The resistance of a copper at 30°C is 500. If the temperature coefficient of copper at 0°C is…

A: In this question,  Find the resistance R at T= 100°C If temperature coefficient = 0.00427 at 0°C…

Q: 10. The resistance of 1.5 km of wire of cross-sectional area 0.17 mm² is 1500. Determine the…

A: Given: Length of wire l = 5 km cross-sectional area of wire a = 0.17 mm² Resistance  R = 150 ohms…

Q: The unit of specific resistance (resistivity) is

A: The solution can be achieved as follows.

Q: Question 4) How would the I-V behaviour be of the following cases. Start by explaining what they…

A: When a metal and a semiconductor are joined together, a junction is formed. Depending on the work…

Q: 2. In a semiconductor crystal, the atoms are held together by a. Covalent bonds b. Forces of…

A: Choose the correct option    In a semiconductor crystal, the atoms are held together by?

Q: 3. Determine the thermal coefficient of resistance of copper at 50°C, then use this value to…

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Q: What is the resistance of a platinum resistor at 480 degrees C, if its resistance at 16 degrees C is…

A: Given  Resistance at 16 degrees=110 ohms  Coefficient =0.00385  We need to find the resistance at…

Q: [5] The conductor becomes incandescent due to the thermal effect of the current. O the chemical…

A: The conductor becomes incantation due to given below method.

Q: Ques 1(a). A copper wire has a resistance of 0.850 at 20°C. What will be its resistance at 40°C? The…

A: Given- Resistance R=0.85 Ωtemperature coefficient of resistance at 0oC=0.004oCTo Find-The resistance…

Q: 2. What particle has an electrical charge -1.6-10 9-19 A B Electron Proton C D Neutron Atom Coulomb?

A: Given data, Charge is given q=-1.6×10-19 C.

Q: A string insulator has 6 units. The voltage across the bottom most until is 20% of the total…

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Q: What is the resistance of this 4-Band resistor ( in Ohms)?

A: For the given resistor, the color bands are: 1) Blue : It gives first digit = 6 2) Grey : It gives…

Q: 1- If we use 5000 μF, we can get a very low ripple voltage. But this is so bad and this a…

A: Ripple voltage is the amount of AC voltage appearing on a DC voltage. for the ripple voltage the…

Q: 33. A string insulator has 4 units. The voltage across the bottom - most unit is 33.33% of the total…

A: In this question we will find string efficiency...

Q: 1. What is the resistance of a copper conductor at 68 °C if its resistance at 20 °C is 6.160?

A: as per our company guidelines we are supposed to answer only first one question. Kindly repost other…

Q: A copper bar has a length of 20 ft. width of 4 inches and thickness of 0.5 inch, If the resistivity…

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Q: Question: A battery is charged from a constant dc source of 220 V through a chopper. The dc battery…

A: First find the output voltage in each case and using input output voltage relation calculate duty…

Q: What is the equivalent of 1 Farad into ratio?

A: This question belongs to circuit theory . It is based on the concept of relation among capacitor ,…

Q: 2. A copper rod is 3 m long and 4 mm diameter. Compute its resistance if the resistivity of the…

A: It is given that: Length=L=3 mDiameter=d=4 mm=4×10-3 mResistivity=ρ=1.76×108  Ω-m

Q: Determine the resistance value (including tolerance) for each of the following resistors. a.…

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Q: A charge A of +250 StatC is placed on a line between two charges B of +50 StatC and C of -300 StatC.…

A: Formula to calculate force due to charge is: F=K×q1×q2r2

Q: Question 11 Given the band diagram for carbon (graphite) below, if you want to operate graphite as…

A: Choose the correct option Band diagram of the graphite is given What is value Applied voltage if we…

Q: 4. Consider the circuit in Figure 3. D1 is Gallium arsenide and D2 is Silicon, each has a forward…

A: As per our company guidelines we are supposed to answer only first question kindly repost the other…

Q: If the thickness, of an insulator is increased then its breakdown voltage 1) remains unchanged 2)…

A: Breakdown voltage: It is defined as the minimum voltage that should be applied to the insulator to…

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).