Voltage, Current and Resistance – 4

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4. The minimum resistance value for a blue, gray, red, silver resistor is ________.

(a) 612 Ω
(b) 6,120 Ω
(c) 6,800 Ω
(d) 6,460 Ω

Explanation
Explanation :
Because of 10% tolerance (last color silver), this resistance may vary 10% of 6800 Ω.
Minimum resistance value = 6800 – 680 = 6120 Ω,
Maximum resistance value = 6800 + 680 = 7480 Ω.
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