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Question
An ammeter of resistance 0.81 ohm reads up to 1 A. The value of the required shunt to increase the range to 10 A is ______.
Options
0.9 ohm
0.09 ohm
0.03 ohm
0.3 ohm
Solution
An ammeter of resistance 0.81 ohm reads up to 1 A. The value of the required shunt to increase the range to 10 A is 0.09 ohm.
Explanation:
9 × S = 1 × 0.81
S = `0.81/9 = 0.09 Omega`
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