An LED has a rating of 2 V and 10 mA. It is used along with 6V battery. The range of series resistance is

• 0 to 200 Ω
• 200 - 400 Ω
• 200 Ω and above
• 400 Ω and above

Correct Answer: 400 Ω and above

Explanation:

R = = 400Ω.

R must be at least 400Ω so that current in LED does not exceed 10 mA.