Electrical Measurements and the Calculation of the Errors Involved, Part 1Macdonald, 1950 - Electric measurements |
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a₁t a₂ ammeter amps AR's AR'x arrangement is shown battery cable calculated calibration charge circuit condenser connected constant constructional error D₁ damping deflection a₁ discharge dR₁ dR₂ E₁ errors on R₁ flux linkages fluxmeter galvanometer gR₁ high resistance i₁ i₂ instrument insulation resistance k₁ k₂ L₁ logarithmic differential magnet manganin maximum measured method moving coil moving-coil n₁ ohmmeter ohms open circuit P₁ pointer potentiometer R+ Rv R+R₁ R₁ R₂ radians ratio Re+ Rx reading error relative error resistance R₁ rheostat Rh S₁ S₂ scale sensitivity shown in fig shunt sliding contact standard cell standard resistance standardising substandard Systematic Error t₁ temperature torque total resistance V₁ voltage voltmeter volts wattmeter Wheatstone bridge wire write zero α₁ α₂)² αι απ Δα ΔΙ Φο