Physics, 17.02.2020 22:08 kataldaine
Which of the following statements are true?
1. Good conductors of electricity have larger conductivity values than insulators.
2. A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor.
3. Semiconductors have resistivity values that are larger than those of insulators.
4. The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed.
5. The resistance of a conductor is proportional to the resistivity of the material of which the conductor is composed.
Answers: 3
Physics, 22.06.2019 07:00, 123abc321cbaabc
What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next
Answers: 1
Physics, 22.06.2019 09:40, zackarygonzalez1028
Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly
Answers: 3
Physics, 22.06.2019 18:00, RyannLambertt7141
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
Which of the following statements are true?
1. Good conductors of electricity have larger cond...
1. Good conductors of electricity have larger cond...
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 01:01