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  • 13-03-2024
  • Physics
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A galvanometer of resistance 100ohm which gives a full scale reflection of 5ma is to be adopted to measure current up to 20a. (a) Calculate the resistance of material required. (b) If the material is made up of material cross-sectional area of 6×10⁻³cm² and resistivity 3×10⁻⁴ ohmmeter, calculate its length.

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