What is bought from an electric company?

a. Electrical energy
b. Electric charge
c. Electrical power
d. None of these


a

Physics & Space Science

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For a capacitor in and ac circuit, how much energy is stored in the capacitor at the instant when current is zero?

A. 0.707 maximum B. half C. zero D. maximum

Physics & Space Science

Molecular Speeds: An ideal gas is held in a container of volume V at pressure p. The rms speed of a gas molecule under these conditions is v. If now the volume and pressure are changed to 2V and 2p, the rms speed of a molecule will be

A. v/2. B. v. C. 2v. D. 4v. E. v/4.

Physics & Space Science

A closed vial of gas is heated with a flame.

C. Consistent D. Inconsistent

Physics & Space Science

The splitting of spectral lines in the presence of strong magnetic fields is the:

A) Doppler effect. B) Second Law of Kirchhoff. C) Zeeman effect. D) photoelectric effect. E) polarization of sunlight.

Physics & Space Science