Question

Which of the following is not a characteristic of LED?

• A. Fast action
• B. High Warm-up time
• C. Low operational voltage
• D. Long life

Hint:

LEDs are known for their instant light emission and long life, and they operate with low voltage. They do not have high warm-up time.

Answer 1

The Correct Option is B

Step 1: Understand LED characteristics.
LEDs (Light Emitting Diodes) have several key characteristics, such as fast action, low operational voltage, and long life.
They turn on instantly and do not require warm-up time, unlike some traditional lighting sources.
Step 2: Identify the incorrect option.
LEDs have a very fast response time, which means they don’t require a high warm-up time.
Hence, option (b) is the correct answer.