Electrical Engineering - Voltage, Current and Resistance - Discussion
Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 4)
4.
The minimum resistance value for a blue, gray, red, silver resistor is
612 
6,120
6,800
6,460
Answer: Option
Explanation:
Because of 10% tolerance(last color silver), this resistance may vary 10% of 6800.
Minimum resistance value = 6800 - 680 = 6120
Maximum resistance value = 6800 + 680 = 7480
Discussion:
23 comments Page 2 of 3.
Ranjeet kr singh said:
1 decade ago
As per colour code
blue grey red silver
6 8 * 10^2 - 10%
so 6800-(6800*10%)
= 6800-680 = 6120 ans.
blue grey red silver
6 8 * 10^2 - 10%
so 6800-(6800*10%)
= 6800-680 = 6120 ans.
Veena said:
1 decade ago
Yeah B s correct. As silver has 10% tolerance.
Sandy said:
1 decade ago
6120 is the correct answer due to the tolerance of the 10% (silver colour) in the resistance value thus as per general calculation 6800.
But 10% of 6800 is 680 thus answer may.
6120 or 7480, here the option available is 6120 thus the answer is 6120.
But 10% of 6800 is 680 thus answer may.
6120 or 7480, here the option available is 6120 thus the answer is 6120.
RANI said:
1 decade ago
YES ANS B, & thanks to PRASHANT
(1)
Haneef said:
1 decade ago
Blue, gray, red, silver.
68*10^2 (-10%).
Tolerance is minimum so substrata if max add.
So, (6800/100) *10=680.
6800-680=6120.
68*10^2 (-10%).
Tolerance is minimum so substrata if max add.
So, (6800/100) *10=680.
6800-680=6120.
Amit said:
1 decade ago
What is the current of an 208V, 111kW three-phase load with cosFI=0.99 ?
Nikhil Bhargava said:
1 decade ago
Blue-grey-red-silver,
68*10^2 (-10% tolerance).
6800-(6800*10%).
= 6800 - 680.
= 6120.
Answer is B.
68*10^2 (-10% tolerance).
6800-(6800*10%).
= 6800 - 680.
= 6120.
Answer is B.
(2)
Mithlesh pandey said:
1 decade ago
Ya this question all right.
The answer is = 6120 is to be correct.
The answer is = 6120 is to be correct.
Prince dixit said:
9 years ago
I agree that, 6120 is the right answer.
(1)
Bhadri said:
9 years ago
I agree with the given answer, i.e. option b.
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