Which of these particles move in a straight horizontal metal wire carrying a current from left to right?
A) Only protons moving from left to right
B) The electrons moving from left to right and the protons from right to left
C) Only the protons moving from right to left
D) Only the electrons moving from right to left
E) Only the electrons moving from left to right
IMAT 2025 · Question 57
Q57 - Direct current
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The correct answer is D) Only the electrons moving from right to left.
In a metal, only electrons move. The protons are fixed in the nuclei.
Conventional current is defined as the flow of positive charge, so the electrons go the opposite way: right to left when the current goes left to right.
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