The light bulb receives energy from a generator through a 6,000 km
| April 20, 2021 | education
The light bulb receives energy from a generator through a 6,000 km transmission line. How long after connecting the generator will the light come on?
L = 6000 km = 6000000 m.
V = 300,000,000 m / s.
t -?
Electric current flows through the wires at the speed of light, which is V = 300,000,000 m / s.
To find the time t after which the lamp will light up from the moment the generator is connected, it is necessary to divide the length of the wire L by the time of movement of the electric current V: t = L / V.
t = 6,000,000 m / 300,000,000 m / s = 0.02 s.
Answer: the light will light up after a time t = 0.02 s from the generator connection.
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.
