What type of electrical current reverses its direction periodically?
A) Fission
B) Direct current
C) Random current
D) Alternating current
Answer: D
Explanation: A) Incorrect. Fission is the process of splitting the nucleus, the positively charged central part of the atom, which results in the release of large amounts of energy.
B) Incorrect. Direct current is an electrical current that always travels in the same direction.
C) Incorrect. Electrical currents can be random or alternating.
D) Correct. Alternating current is an electrical current that reverses direction periodically.
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