(a) You are required to select a carbon resistor of resistance 47kΩ �

1.	(a) You are required to select a carbon resistor of resistance 47kΩ ±10% from a large collection. What should be the sequence of colour bands used to code it? (b) Write the characteristics of manganin which make it suitable for making standard resistance.
Answer» (a) Resistance = 47kΩ ±10% = 47 x 10^-3Ω% Sequence of colour should be: Yellow, Violet, Orange and Silver (b) (i) Very low temperature coefficient of resistance. (ii) High resistivity

(a) You are required to select a carbon resistor of resistance 47kΩ ±10% from a large collection. What should be the sequence of colour bands used to code it? (b) Write the characteristics of manganin which make it suitable for making standard resistance.

Answer»

(a) Resistance = 47kΩ ±10% = 47 x 10^-3Ω%

Sequence of colour should be:

Yellow, Violet, Orange and Silver

(b) (i) Very low temperature coefficient of resistance.

(ii) High resistivity

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(a) You are required to select a carbon resistor of resistance 47kΩ ±10% from a large collection. What should be the sequence of colour bands used to code it? (b) Write the characteristics of manganin which make it suitable for making standard resistance.

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