How will the resistance of a wire change if you cut it in half?
| October 18, 2021 | education
Data: lk (final wire length) = 1/2 ln (initial wire length); ρ (electrical resistivity) = const; S (wire section) = const.
The change in the resistance of the specified wire after cutting is determined from the ratio: k = Rc / Rn = (ρ * lc / S) / (ρ * ln / S) = lc / ln = 1/2 ln / ln = 1/2.
Answer: After cutting, the resistance of the specified wire will decrease by 2 times.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
