Ram has an LED of resistance 10 $Ω$ which will only light up if the current provided is 1A. Below 1A current it won't light up, above that the LED will burst. He also has 10 two volt cells. Find out how many cells will Ram need to light up the LED?

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Solution

The correct option is C
5

Given, R = 10 $Ω$ , I = 1A
Required voltage = I $\times$ R = 10V
Hence, 5 two volt batteries are required.

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Ram has an LED of resistance 10Ω which will only light up if the current provided is 1A. Below 1A current it won't light up, above that the LED will burst. He also has 10 two volt cells. Find out how many cells will Ram need to light up the LED?

The correct option is C 5 Given, R = 10 Ω, I = 1A Required voltage = I × R = 10V Hence, 5 two volt batteries are required.

Ram has an LED of resistance 10 $Ω$ which will only light up if the current provided is 1A. Below 1A current it won't light up, above that the LED will burst. He also has 10 two volt cells. Find out how many cells will Ram need to light up the LED?

The correct option is C
5

Given, R = 10 $Ω$ , I = 1A
Required voltage = I $\times$ R = 10V
Hence, 5 two volt batteries are required.