Electrical Engineering - Voltage, Current and Resistance - Discussion
Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 5)
5.
The maximum resistance value for a brown, red, yellow, gold resistor is
126,000 
126,600
114,000
132,000
Discussion:
45 comments Page 1 of 5.
GIRIRAJ said:
1 decade ago
Formula for finding resistance is
for finding max value=(ABx10^C)+T%
for finding min value=(ABx10^C)-T%
where A= 1st band colour
B= 2nd band colour
C= 3rd band colour
T= 4th band colour (tolerance)
here in this question
Brown =1
red =2
yellow=4
Gold =5%
So acc... to formula
(ABx10^C)+T%
(12x10^4)+5%
we get 120000+((120000*5)/100)
So answer is 120000+6000 =126000 ohm
for finding max value=(ABx10^C)+T%
for finding min value=(ABx10^C)-T%
where A= 1st band colour
B= 2nd band colour
C= 3rd band colour
T= 4th band colour (tolerance)
here in this question
Brown =1
red =2
yellow=4
Gold =5%
So acc... to formula
(ABx10^C)+T%
(12x10^4)+5%
we get 120000+((120000*5)/100)
So answer is 120000+6000 =126000 ohm
(1)
Biswaranjan Das said:
1 decade ago
Wrong answer.
Answer is according to resistor color code.
B B R O Y Great Britain Very Good Wife.
It shows black, brown, red, orange, yellow, green, blue, violet, grey, and white in 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively.
That's why resistance is 120000.
And tolerance of gold is 5%.
So it become 120000+6000 = 126000.
Answer is according to resistor color code.
B B R O Y Great Britain Very Good Wife.
It shows black, brown, red, orange, yellow, green, blue, violet, grey, and white in 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively.
That's why resistance is 120000.
And tolerance of gold is 5%.
So it become 120000+6000 = 126000.
(2)
Pranay said:
7 years ago
Answer A is right.
Question asking for "The maximum resistance value for a brown, red, yellow, gold".
So,
Brown 1.
Red 2.
Yellow 4.
Gold ±5%.
Hence, 120000 x 5/100,
= 6000.
Now for maximum value,
So, 120000+6000,
= 126000.
Question asking for "The maximum resistance value for a brown, red, yellow, gold".
So,
Brown 1.
Red 2.
Yellow 4.
Gold ±5%.
Hence, 120000 x 5/100,
= 6000.
Now for maximum value,
So, 120000+6000,
= 126000.
(2)
Rathi said:
1 decade ago
@Dalmar is Right.
Why we adding 6000?
Because they asking the maximum resistance value. So we should add the tolerance of gold for 120000(120000*.05 = 6000).
If they ask minimum value we need to subtract 6000 from 120000.
Why we adding 6000?
Because they asking the maximum resistance value. So we should add the tolerance of gold for 120000(120000*.05 = 6000).
If they ask minimum value we need to subtract 6000 from 120000.
Venkat said:
8 years ago
EVERY ONE IS RIGHT UP TO 120000 NEXT IS DOUBT +5% or -5%. It is simple +5% for maximum resistance (120000+6000) and -5% for minimum resistance (120000-6000). In question maximum resistance asked so 120000+6000=126000.
(1)
Yhel said:
2 years ago
Because of 5% tolerance(last colour GOLD), this resistance may vary 5% of 120 000.
Minimum resistance value = 120 k - (120k * 0.05) = 114 k ohms.
Maximum resistance value = 120 k + (120k * 0.05) = 126 k ohms.
Minimum resistance value = 120 k - (120k * 0.05) = 114 k ohms.
Maximum resistance value = 120 k + (120k * 0.05) = 126 k ohms.
(6)
Sumitram said:
9 years ago
The right answer is 1260000 ohm.
It is because brown = 1, red = 2 and yellow = 4 log10.
Therefore, resistance = 120000 and tolerance is 5%.
So, max resistence = 120000 + 5% * 120000 = 126000.
It is because brown = 1, red = 2 and yellow = 4 log10.
Therefore, resistance = 120000 and tolerance is 5%.
So, max resistence = 120000 + 5% * 120000 = 126000.
Jayaprasad said:
1 decade ago
First two colors are digits: Brown-1 & red -2.
Third color yellow is multiplier: Yellow -10000.
Last color is tolerance: Gold- 5%.
(12*10000)+/_(5% of 120000) = 126000 (max).
Third color yellow is multiplier: Yellow -10000.
Last color is tolerance: Gold- 5%.
(12*10000)+/_(5% of 120000) = 126000 (max).
PRATIK KHANDLA said:
7 years ago
Because of 5% tolerance(last color gold), this resistance may vary 5% of 120000.
Minimum resistance value = 120000-6000 = 11400.
Maximum resistance value = 120000+6000 = 126000.
Minimum resistance value = 120000-6000 = 11400.
Maximum resistance value = 120000+6000 = 126000.
(4)
Ramesh said:
1 decade ago
According resistance value codification
Brown =1 red=2 yellow=4 Gold=5%
the value of resistance 120000ohm =120000/1000=120K
but here maximum value refers to 126,000
Brown =1 red=2 yellow=4 Gold=5%
the value of resistance 120000ohm =120000/1000=120K
but here maximum value refers to 126,000
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