problem26_28

problem26_28 - V V b) For a 500-m voltmeter, the...

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26.28: Given that the full-scale deflection current is 500 A μ and the coil resistance is : 0 . 25 a) For a 20-mA ammeter, the two resistances are in parallel: ( 29 ( 29 ( 29 = × - × = × = = - - - 641 . 0 A 10 500 A 10 20 0 . 25 A 10 500 6 3 6 s s s s c c s c R R R I R I
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Unformatted text preview: V V b) For a 500-m voltmeter, the resistances are in series: ( 29 . 975 . 25 A 10 500 V 10 500 6 3 = - = - + =--s c ab s s c ab R R I V R R R I V...
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