The coulomb is the basic unit of electric charge produced by approximately 6.28 x 10^18 displaced electrons.

The coulomb is the basic unit of electric charge produced by approximately 6.28 x 10^18 displaced electrons.

• A. True
• B. False
• C. It is the unit of current
• D. It is the unit of resistance

Answer: (A)

The statement tests your understanding that the coulomb is the unit of electric charge. One coulomb represents the amount of charge carried by a current of one ampere flowing for one second, and in terms of elementary charges it’s about 6.24 × 10^18 electrons (each electron has a charge of roughly 1.60 × 10^-19 C). The number given, 6.28 × 10^18, is a reasonable close approximation. It’s not the unit of current (that’s the ampere) or resistance (that’s the ohm). So the statement is correct.

The statement tests your understanding that the coulomb is the unit of electric charge. One coulomb represents the amount of charge carried by a current of one ampere flowing for one second, and in terms of elementary charges it’s about 6.24 × 10^18 electrons (each electron has a charge of roughly 1.60 × 10^-19 C). The number given, 6.28 × 10^18, is a reasonable close approximation. It’s not the unit of current (that’s the ampere) or resistance (that’s the ohm). So the statement is correct.