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a d'arsonval meter movement deflects to 0.8mA. what is the peak value of the alternating current if the instrument uses full-wave rectification?

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Idc = 2Ipk/pi.
0.6 = 2Ipk/3.14,
2Ipk = 1.88, Ipk = 0.94 mA.

what is 21pk?

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