Electrical Engineering - Ohm's Law - Discussion
Discussion Forum : Ohm's Law - General Questions (Q.No. 4)
4.
A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
Discussion:
78 comments Page 2 of 8.
Prakash pritam said:
9 years ago
I think in this question we are assuming the minimum value of resistance, Hence the value of resistance is 23 * 10^3 - 10% = 22.7 * 10^3,
Now, V/R = I,
=> 50/22.7 * 10^3 = 2.20 mA.
Now, V/R = I,
=> 50/22.7 * 10^3 = 2.20 mA.
SKS said:
9 years ago
If resistor will contain 5 color bands then how can we able to determine it's value?
Jayesh J. Joshi said:
9 years ago
Keep this as "BBROY went to Great Britain to get Very Good Wife with Gold and Silver".
Resistor values can be known by the colour band.
0 black
1 blue
2 red
3 orange
4 yellow
5 green
6 blue
7 violet
8 grey
9 white
The resistor value is given by 1st 3 bands.
Start from left most band, 3rd value is a power of 10.
Ans: red(2), orange(3), orange(10^3).
So, the value becomes 23 * 10^3.
Resistor values can be known by the colour band.
0 black
1 blue
2 red
3 orange
4 yellow
5 green
6 blue
7 violet
8 grey
9 white
The resistor value is given by 1st 3 bands.
Start from left most band, 3rd value is a power of 10.
Ans: red(2), orange(3), orange(10^3).
So, the value becomes 23 * 10^3.
Elsadig said:
9 years ago
Good job.
But I still have the question.
Green = 5.
Green = 8.
Which is right and why we use 2 values?
But I still have the question.
Green = 5.
Green = 8.
Which is right and why we use 2 values?
Mahesh kumar k said:
9 years ago
Good explanation. Thanking you all.
I want to know easy method to remember the colour coding. Can anyone help me?
I want to know easy method to remember the colour coding. Can anyone help me?
JAVARIA said:
9 years ago
Marvelous explanation. I am really much satisfied from this explanation. Thank you to all.
Maneesh Mahajan said:
9 years ago
Very nice explanation. I am satisfied. Thank you all.
Awais said:
9 years ago
It is 5% of Gold and 20% of None.
AKRITI said:
9 years ago
CLEAR VALUE OF GOLD IS 5% OR 20%.
Rakesh said:
10 years ago
Without calculator, how it's calculated?
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