Two nickel wires of the same length but different cross-sectional area are connected in parallel and included in the circuit. Which of them will release more heat at the same time? Why?
More heat will be released on the wire, the cross-sectional area of which is larger, because the resistance is inversely proportional to the cross-sectional area, and according to the Joule-Lenz law, the released amount of heat is inversely proportional to the resistance at equal voltage.
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