Question 19 D An electron is accelerated in an electric field through a potential difference of +2400 V. Which of the following justifies why the change in kinetic energy can be calculated using AU = QAV?
А
The electric field exerts a force on the electron that is proportional to the electron's charge
B
The change in potential energy of the field electron system is equal to the change in kinetic energy of the particle
с
The work done on the particle by the field is equal to the electric force times the distance the electron moves.
D
Changes in potential and kinetic energies are always equal.

insects!

explanation:

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

wavelegth as in spectrum red oygbiv

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