B5 - 1 - Current and Drift Velocity

What is current a measurement of?

• The amount of energy passing by a point per unit of time.

• The amount of charge passing by a point per unit of time.

• The amount of power passing by a point per unit of time.

• The amount of voltage passing by a point per unit of time.

Why is current considered a scalar quantity despite having a direction?

• It does not have a magnitude.

• It does not obey the rules of vector addition.

• It only flows in one direction.

• It is always constant.

What is the "real direction" of current?

• The direction of positive charge movement.

• The direction of negative charge movement.

• The direction perpendicular to the flow of electrons.

• The direction of magnetic field lines.

In the equation I = nAvq, what does 'A' represent?

• Ampere

• Acceleration

• Cross-sectional area of the material

• Amount of charge

What is the standard unit for drift velocity?

• Amperes (A)

• Coulombs (C)

• Meters per second (m/s)

• Volts (V)