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Electricity and Magn

Scruggs Physical Science

QuestionAnswer
The force or push that causes electric charges to move is called . Current
Electric charges always flow from areas to areas. negative to positive
A material through which electrons do NOT flow easily is a(n) . an insulator
. Which of the following statements about electric charge is true? Electrical forces act at a distance.
Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?A. plastic plate C. copper wire B. silver spoon D. gold necklace Plastic Plate
What will increase the resistance of a wire? Increasing the temperature of the wire
What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms? 45 amps
Which two areas of physical science are closely related to the development of electric motors and generators? A. sound and light C. light and magnetism B. electricity and sound D. electricity and magnetism Electricity and Magnetism
Which of the following will decrease the strength of the magnetic field around a wire? A. increasing the current flowing through the wire B. using less loops around the iron core C. flipping the direction of the current flowing through the wire Using less loops aroudn the iron core
Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps? A. 1.98 V C. 5,050 V B. 0.000198 V D. 100.0198 V 1.98 V
This contains a piece of metal that melts if it gets too hot in order to open a circuit. A. conductor B. insulator C. fuse D. circuit breaker circuit breaker
The function of a generator is to change . A. chemical energy to electrical energy B. electrical energy to chemical energy C. electrical energy to mechanical energy D. mechanical energy to electrical energy . mechanical energy to electrical energy
This exerts a force that causes other electric charges to move. A. electrical poles C. insulators B. electrical fields D. conductors Electric Fields
Created by: m8smith
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