Mark the correct statement Select one: O a. Insulators are those materials that contain electrons that can move freely. Or b. Conductors and insulators are materials with similar electrical properties. Or c. Conductors and insulators are those materials containing electrons that can move freely. Or d. Conductors are those materials containing electrons that can move freely. Are the materials that will be used to make electrical circuits.

Problem 3: A factory mamufactures a specific copper part. It is found at a certain temperature the resistance in m? of this part is normally distributed with mean of 23.8 and standard deviation of 1.23. Among 5000 units of such parts, how many units are likely to have a resistance (a) less than 23? (b) greater than 24? (c) between 24.2 and 24.5?

Please answer in typing format

Question 1a Which is necessary for electrons to flow from the negatively charged portion of the solar panel to the positively charged portion of the panel? Pick one answer and explain why. A) permit B) circuit C) diode D) charge controller   Question 1b. Which of the following is not a factor that affects how much power a solar panel will produce? Pick one answer and explain. A) the size of the panel B) the reflective coating on the panel C) the air temperature D) the relative humidity   Question 1c. Which of the following is the rating on a solar panel that indicates the theoretical maximum voltage a panel can produce when measured under standard test conditions? Pick one answer and explain why. A) maximum power (Pmax) B) maximum power voltage (Vmp) C) open circuit voltage (Voc) D) short circuit voltage (Isc)

What is the main difference between a semiconductor and an insulator? a)An insulator contains no electrons in the valence band. b)An insulator has a much smaller band gap than a semiconductor. c)An insulator has a much larger band gap than a semiconductor. d)An insulator contains no electrons. Previous QuestionPreviousNext QuestionNext

please answer all parts

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 resistance, in ohms, of a 77-m wire in milli-ohm. Use resistivity equal to 1.72x10-8 ohm-m.

Figure Q4 shows the silicon wafer. This silicon has been added with the two elements as listed in Table Q3. Identify the majority charge carrier in each extrinsic silicon wafer and justify your answer with illustrations.

A semiconductor is a crystalline material. Please choose one: a. have strong covalent bonds between neighboring atoms b. has many free electrons held by the attraction of positive ions c. with only one electron in its outer shell D. has a full valence shell