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Q.

 A carbon resistor has colour strips as violet, yellow brown and golden. The resistance is

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a

740 Ω

b

407 Ω

c

641 Ω

d

741 Ω

answer is B.

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Detailed Solution

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Using standard colour codes

Violet = 7, yellow = 4, brown = 1 and gold = 5 % (tolerance)

So\,\,R = 74 \times {10^1} \pm 5\% = 740 \pm 5\%

So its value will be nearest to 741 Ω.

 

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