Physics

Which material provides resistance to the flow of electrons?
A. Silver
B. Saltwater
C. Salt crystals
D. Copper

A circuit has a resistance of 50.0 ohms. What is the voltage needed to generate a current of 0.02 amps?
A. 100 volts
B. 2,500 volts
C. 0.0004 volts
D. 1.00 volt

What is the effect of doubling the resistance of a circuit on the current in the circuit?
A. The current remains the same.
B. The current is reduced by half.
C. The current is doubled.
D. The current is four times greater.

  1. 👍
  2. 👎
  3. 👁
  1. I read my chapters and studied but this specific information was nowhere to be found ):

    1. 👍
    2. 👎
  2. every material has resistivity but dry salt crystals are the best you listed.

    V = i * R

    i = V/R

    1. 👍
    2. 👎
    👤
    Damon
  3. 1. Salt Crystals
    2. 1.00 volt
    3. the current is reduced by half

    1. 👍
    2. 👎
  4. uhgitsyanna is 100% correct. The other answers are
    1. Insulator
    5. 0.8

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. ***Mixtures

  2. Science

    1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. Mixtures have

  3. Chemistry

    When copper wire is placed into a silver nitrate solution, silver crystals and copper(II) nitrate solution form. Write the balanced chemical equation for the reaction. (Type your answer using the format CH4 for CH4.) 1 Cu(s) +

  4. world history

    Which natural resource from West Africa had a significant impact on the growth of Ghana? A. gold B. salt C. silver D. wood I think salt am I right?

  1. SCIENCE(CHEMISTRY)

    calculate the mass of silver deposited when a current of 2.6a is passed through a solution of a silver salt for 70mins ag=108,1 faraday 96500

  2. science

    Which of the following sentences best compares conductors and insulators? A. Conductors and insulators allow electrons to flow freely. B. Conductors and insulators do not allow for electrons to flow freely. C. insulators obstruct

  3. Chemistry

    What is the function of a salt bridge in a galvanic cell? 1. To permit electrons to flow through the solution. 2. To maintain a steady flow of reactants from the cathode to the anode. 3. To form complex ions with the products of

  4. Science

    Which of these statements about saltwater is correct? a. Saltwater freezes at a lowers temperature? b. Saltwater freezes at a higher temperature c. saltwater does not freeze at any temperature d. saltwater freezing point depends

  1. Chemistry

    Which of the changes are chemical changes? a) Sugar crystals are ground to a fine powder. b) A candle is burned c) Two clear colorless salt solutions are mixed and a bright orange precipitate forms. d) Candle wax is melted e) A

  2. Chemistry

    A student was asked to prepare a sample of copper(ii)sulphate crystals(CUSO4.5H2O) given 5g of of copper (ii)oxide (CUO) as the starting material.if 10g of dry crystals of CUSO4.5H2O were obtained,calculate the percentage yield???

  3. Chemistry

    A pure white solid material that looks like table salt releases gas when heated under certain conditions. There is no change in the appearance of the solid, but the reactivity of the material changes. Did a chemical or physical

  4. physics

    (a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the

You can view more similar questions or ask a new question.