What type of current reverses its direction of flow at regular intervals?
A) direct
B) alternating
Correct Answer:
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Q9: The nucleus of an atom contains_.
A) electrons
Q10: The atomic number of an element is
Q11: Matter can exist in only two states:
Q12: Direct current is described as _.
A) omnidirectional
B)
Q13: What force is demonstrated in objects with
Q15: What are the three principle parts of
Q16: What part of an atom has no
Q17: Alternating current is described as _.
A) omnidirectional
B)
Q18: The basic law of physics states that
Q19: The valence shell of an atom is
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