Experiment 2- Ohm's Law

Identify the statement from the following when the inductance can have high value. a. All the given options O b. If the number of turns of the wire is more O c. If the length of the wire is longer O d. If the cross-sectional area is less

Question 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.

Since an n-type semiconductor acquires a negative charge on the material, the majority has electrons as a carrier.Please choose one: a.False b.Right

5.) In a parallel circuit: A) Each branch of the circuit must have the same potential difference B) Each branch of the circuit can have a different current C) Both of the above D) None of the above 5) 6.) A semiconductor is a material that: A) Has a resistance between a true conductor and a true insulator 6) B) Behaves like a conductor under certain conditions and an insulator at other times C) Both of the above D) None of the above

The semiconductors is a materials whose conductivity and resistivity is more than conductors and insulators true O False

Subject:electronic engineering Why a semiconductor acts as an insulator at 0°k and why its conductivity increases with increasing the temperature?

Using the idea of energy bands in solid materials, explain the characteristics of the followingmaterialsa) conductorsb) insulatorsc) semiconductors

3) a) A wire sample (1 mm in diameter by 1 m in length) of an aluminum alloy (containing 1.2% Mn) is placed in an electrical circuit such as that shown in the figure below. A voltage drop of 432 mV is measured across the length of the wire as it caries a 10 A current. Calculate the electrical conductivity of this alloy - Length, / Area, A Sample geometry

2. When a current of 1A flows through a wire, the drift velocity of the electrons is 0.9 mm/s. What will be the drift velocity of the electrons when a 2A current flows through another wire of the same material having double the length and double the area of cross section and same temperature.

Find out which of the following statements is/are ALWAYS TRUE for the resistivity and conductivity of a material? I. The resistivity of a material is temperature-dependent. II. The conductivity of a material is temperature-dependent. III. As the resistivity of a material increases. its conductivity decreases.

Please type out and or diagram Your solution I have bad eyesight and have a hard time reading handwriting

A sample of wire (1 mm in diameter by 1 m in diameter) length) of an aluminum alloy (containing 1.2% Mn) is placed in an electrical circuit, as shown in the figure next to. A voltage drop of 432 mV is measured at wire length when it carries a 10 A current. Calculate the conductivity of this alloy.

In high voltage engineering( brielfy explanation each ionization and parts)   What do you mean by ionization ? Explan different types of ionizations

In a semiconductor crystal, the atoms are held together by: A) The interaction of valence electrons B) Ionic bonds C) Covalent bonds D) Forces of attraction Choose correct answer

i need the answer quickly

A piece of silver wire has a resistance of 1 ohm. Determine the resistance of alead wire one-third the length and one-third the diameter if the resistivity of lead wire is 30 times that of silver. NOTE: Please explain where did you get the variables so I can understand them. Thank you

Kindly help with this " material science and engineering " question

A two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 Q), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 C-1), and for Nickel it is equal to (0.006 C1).

A8-cm long wire carrying a uniformly distributed 12-µc charge is bent into a semicircle. What is the el O A) 4.2 MV B) 0.042 MV C) 0.42 MV O DI 42 MV E) 420 MV

Discuss the variation of resistivity with temperature for insulators, semiconductors and conductors. Support your discussion with resistivity versus temperature graph/curves

1. Given a typical tungsten filament of a light bulb, 1 m long and 0.05mm in radius. nim B. Given that the temperature resistivity coefficient of tungsten is 4.5 X 10-3/ °C, meldoig zinovovd omo A. Calculate the typical resistance of the filament given that its resistivity at 20 °C is 5.6 X 10-8 (Q -m). calculate the resistance at 2000 °C. assuming linear resistivity-temperature 2000 ert pria relation.

An 18-gauge copper wire with a diameter of 1-mm carries a constant current of 1-A. The charge concentration in the wire is 8.5 x 1028 per cubic meter. Determine the electric field in mN/C. Use q = 1.602 x 10-19 and resistivity equal to 1.72x10-8 ohm-m.

Some copper wire has a resistance of 200 at 20 ° C . A current is passed through the wire and the temperature rises to 90 ° C . Determine the resistance of the wire at 90 ° C , correct to the nearest ohm , assuming that the temperature coefficient of resistance is 0.004 / C at 0 ° C

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An aluminum wire 7.5 m long is connected in parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination it is found that the current in aluminum wire is 3 A. The diameter of aluminum wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 1.7 x 10 “ ohm-cm and that of aluminum is 1.724 micro-ohm-cm.