What is the resistance of the incandescent lamp on which it is written: U = 120V, P = 60W?
| September 23, 2021 | education
Initial data: U (voltage on a given incandescent lamp) = 120 V; P (incandescent lamp power) = 60 W.
We express the resistance of this incandescent lamp from the formula for calculating the electrical power: P = U ^ 2 / R, whence R = U ^ 2 / P.
Calculation: R = 1202/60 = 240 ohms.
Answer: This incandescent lamp has a resistance of 240 ohms
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.
