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A positive ion is formed when

A positive ion is formed when. A proton is added to a neutral atom A neutron is removed from a neutral atom An electron is removed from a neutral atom An electron is added to a neutral atom. The number of protons in an atomic nucleus determines the. Atomic weight Atomic number Isotope.

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A positive ion is formed when

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  1. A positive ion is formed when • A proton is added to a neutral atom • A neutron is removed from a neutral atom • An electron is removed from a neutral atom • An electron is added to a neutral atom

  2. The number of protons in an atomic nucleus determines the • Atomic weight • Atomic number • Isotope

  3. The smallest part of a compound that retains the characteristics of that compound • Atom • Molecule • Covalent Bond • Cell

  4. The unit of electrical charge • Coulomb • Ampere • Watt • Farad

  5. Electrons are attracted to • Negatively charged objects • Other electrons • Positively charged objects

  6. An electrostatic field is strongest • Close to a charged object • Far away from a charged object

  7. What symbol is used in formulas to represent electric charge? • Q • E • I • R

  8. What type of quantity is measured in Ampere’s? • Voltage • Force • Current • Resistance

  9. Electric _____ describes how quickly charge is moving through a circuit • Voltage • Current • Resistance • Field

  10. Every circuit consists of what three main parts? • Transistors, diodes, and capacitors • Rheostats, MOSFET’s, and voltmeters • Voltage source, load, and conductors • Static charge, microchip, and clock

  11. The load in a circuit is where electrical _______ is converted into a different form such as light, heat,sound, or motion. • Energy • Charge • Resistance • Current

  12. The SI units of energy are ______. • Watts • Ohms • Joules • Volts

  13. An Ampere is equivalent to one • Joule/second • Coulomb/Volt • Newton/meter2 • Coulomb/second

  14. Copper wires are often used as the ______ in a circuit. • Load • Source of Voltage • Insulators • Conductors

  15. _______ are materials that permit the electrons to flow easily. • Conductors • Insulators • Dielectrics • Plastics

  16. ______describes how much the flow of electrons is opposed. • Voltage • Current • Resistance • Capacitance

  17. The SI units of resistance are _____. • Ohms • Amperes • Volts • Newtons

  18. A _____ like copper has a very _____ resistance. • Conductor, large • Insulator, small • Conductor, small • Insulator, large

  19. Electrons flow around the circuit from the ____ end of a battery to the ___ . • Negative, Positive • Positive, Negative • Neutral, Negative • Positive, Neutral

  20. The movement of charge in a circuit is often described by the ______ current which flows from the positive terminal of a battery to the negative. • Conventional • Unorthodox • Iconoclastic • Anti-electron

  21. When multiple electrical components are connected in _____ the current flows along a single path. • Parallel • Series • Perpendicular • Tandem

  22. The dependence of electric current to the voltage and resistance of a circuit is described by ______ Law • Coulomb’s • Ohm’s • Faraday’s • Lenz’s

  23. The book describes ______ as the electrical “pressure” that pushes current through a circuit. • Resistance • Capacitance • Inductance • Voltage

  24. What voltage is needed to produce a current of 2 A through a resistance of 6 Ohms? • 12 V • 24 V • 0.33 V • 8 V

  25. When a load of 4 Ohms is connected to a potential difference of 12 V ______ of current flows in the circuit. • 48 Amperes • 16 Amperes • 3 Amperes • 0.3 Amperes

  26. How many volts does 8 kV represent? • 0.008 V • 80 V • 8000 V • 8,000,000 V

  27. 6x10-6 Coulombs is equivalent to • 6 mC • 6 MC • 6 nC • 6 mC

  28. The invisible lines of force surrounding a charged object are called the: • Electron Force • Electrostatic Field • Voltage lines • Magnetic Field

  29. Which part of a circuit provides the electrical energy? • Voltage source • Load • Conductors

  30. A 5kW resistance connected to a 100 V source will produce how much current? • 20 A • 0.05 A • 20 mA • 2 A

  31. The two poles of a permanent magnet are ____ and ______. • Positive, Negative • Black, White • North, South • Loud, Quiet

  32. Unlike poles ____ each other. • Attract • Repel • Consume • Dislike

  33. The symbol for magnetic flux density is • B • E • A • 

  34. The symbol for magnetic flux is ___. • B • E • A • 

  35. A unit equal to the number of magnetic field lines per square centimeter. • Webers/square meter • Teslas • Gauss • Farad

  36. What physicist discovered that electric currents create magnetic fields? What physicist discovered that electric currents create magnetic fields? • Faraday • Oersted • Volta • Tesla What physicist discovered that electric currents create magnetic fields?

  37. The magnetic field lines created by the electric current through a straight wire: • Radiate outward • Radiate inward • Make circles around the wire. • Make octagons around the wire.

  38. A current carrying conductor coiled around a cylinder is called a(n) ______. • Capacitor • Solenoid • Inductor • Toroid

  39. The unit of measure for magnetomotive force is the ____. • Flux • Gilbert • Gauss • Tesla

  40. An electromagnet is a solenoid with _____. • A copper core • A plastic core • A creamy chocolate center • An iron core

  41. Discovered that electric currents create magnetic fields. • Oersted • Faraday • Lenz • Volta

  42. Discovered that magnetic fields could induce an electric current • Oersted • Faraday • Lenz • Volta

  43. Converts mechanical energy to electrical energy • Motor • Transformer • Generator • Battery

  44. A transformer works • With either AC or DC electricity • Only with AC electricity • Only with DC electricity • Only with decepticons

  45. The purpose of a transformer’s iron core is to • Conduct electric current from the primary coil to the secondary coil. • Absorb heat generated by the coils so the transformer does not burn up. • Transfer the magnetic flux created by the primary coil to the secondary coil. • Cancel out the magnetic field created by the primary coil

  46. The input side of a transformer is called the • Primary • Secondary • Tertiary • Core

  47. The voltage induced at the secondary coil of a transformer is an example of • Self induction • Mutual induction • Pizeoelectricity • Chemical Action

  48. A step-up transformer • Increases both the voltage and the current • Increases the voltage but decreases the current • Decreases the voltage but increases the current • Decreases both the voltage and the current

  49. Transformer cores are laminated to reduce • Copper losses • Hysteresis losses • Eddy current losses • Ravens losses

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