You'll be shown 11 questions, each with four possible answers. Try to guess which one is correct.
1.Electricity is a class of phenomena ____________ from the existence of charge.
2.The basic unit of charge __________ on the proton or electron.
The proton's charge ____________________ as positive while the electron's is negative.
The __________ common unit used to measure electrical quantities is the one in which the ampere is the unit of current, the coulomb is the unit of charge, the volt is the unit of electromotive force, and the ohm is the unit of resistance, reactance, or impedance.
In 1660 Otto von Guericke invented a crude machine ___________________ static electricity.
Alternating current, abbr. AC, is a flow of electric charge that ____________ periodic reverses in direction.
In North America ordinary household current ______________ at a frequency of 60 times per second.
In electricity, a generator is a machine used to change mechanical energy ___________ electrical energy.
Electromagnetic induction ______________________ in1831 by Michael Faraday.
Electromagnetic induction is the production of an electromotive force (emf) in a conductor ______________ a changing magnetic field about the conductor.
Electrostatic induction is the production of an unbalanced electric charge on an uncharged metallic body as a result of a charged body being brought near it without touching it. If the charged body is positively charged, electrons in the uncharged body __________________ toward it