Calculate the current that flows when the phone is off hook

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Reference no: EM131383076

Suppose the voltage across a telephone line, at the subscriber, drops from 48 V to 10 V when the phone goes off hook. If the telephone instrument has a resistance of 200 ohms when off hook and represents an open circuit when on hook, calculate:

(a) the current that flows when the phone is off hook

(b) the combined resistance of the local loop and the power source at the central office

Reference no: EM131383076

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