Charge, Current , Voltage And Power. Chapter 2

Question 1

Unit of electric current

Answer 1

Ampere

Question 2

Amount of substance unit

Answer 2

Mol

Question 3

Unit of luminous intensity

Answer 3

Candala

Question 4

Current

Answer 4

Charge in motion

Question 5

Fundamental unit of charge

Answer 5

Coulomb. It is defined in terms of the Ampere by counting the total charge that passes through an arbitrary cross-section of the wire during an interval of one second.

Question 6

1 ampere equals

Answer 6

1 coulomb per second

Question 7

Direct current

Answer 7

A current that is constant in time

Question 8

Proper definitive symbology for currents include

Answer 8

The value of the current and an Arrow

Question 9

Voltage

Answer 9

The voltage across a terminal pair is the measure of the work required to move charge through the element.

Question 10

Correct symbolic description of voltage

Answer 10

Includes using the quantity of voltage and a plus minus sign pair

Question 11

The absorbed power must be proportional to the number of

Answer 11

Coulombs transferred per second (current) and to the energy needed to transfer one coulomb through the element (voltage).