Physics II

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Across
  1. 3. a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.
  2. 4. the time rate of flow of electric charge, in the direction that a positive moving charge would take and having magnitude equal to the quantity of charge per unit time: measured in amperes.
  3. 9. a material's opposition to the flow of electric current; measured in ohms.
  4. 13. The force exerted between magnets.
  5. 14. A device used to transfer electric energy from one circuit to another.
  6. 15. is the rate at which electric energy is transferred.
  7. 17. the principle that the rate of production of heat by a constant direct current is directly proportional to the resistance of the circuit and to the square of the current.
Down
  1. 1. An electric current flowing in one direction only.
  2. 2. An electric current that reverses direction in a circuit at regular intervals.
  3. 5. The difference in electric potential between two points, especially two points in an electric circuit.
  4. 6. any device for converting mechanical energy into electrical energy by electromagnetic induction, esp a large one as in a power station
  5. 7. a portion of a ferromagnetic material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
  6. 8. a closed circuit in which the current divides into two or more paths before recombining to complete the circuit.
  7. 9. a device consisting of an iron or steel core that is magnetized by electric current in a coil that surrounds it.
  8. 10. A law stating that when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage.
  9. 11. A law which states that the sum of the latent heat of steam at any temperature of generation and the heat required to raise water from 0°C to that temperature is constant.
  10. 12. The definition of a series circuit is an electric circuit in which the electric passes through each circuit element in order.
  11. 16. The law stating that the direct current flowing in a conductor is directly proportional to the potential difference between its ends.