Which unit represents one thousand cycles per second?

Which unit represents one thousand cycles per second?

• A. Kilohertz
• B. Hertz
• C. Megahertz
• D. Nanohertz

Answer: (A)

Frequencies are measured in hertz, where 1 hertz equals one cycle per second. The prefix kilo- means 1,000, so kilohertz represents 1,000 cycles per second. That makes kilohertz the correct unit for 1,000 cycles per second. For contrast, hertz is just one cycle per second, megahertz is 1,000,000 cycles per second, and nanohertz is 1e-9 cycles per second.

Frequencies are measured in hertz, where 1 hertz equals one cycle per second. The prefix kilo- means 1,000, so kilohertz represents 1,000 cycles per second. That makes kilohertz the correct unit for 1,000 cycles per second. For contrast, hertz is just one cycle per second, megahertz is 1,000,000 cycles per second, and nanohertz is 1e-9 cycles per second.