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Question
In PMMC writing system, the magnitude of pen deflection is proportional toS1: Current flowing through the coilS2: Voltage in the coil
Options:
A .  S1 is true & S2 is false
B .  S2 is true & S1 is false
C .  Both S1 & S2 are true
D .  Both S1 & S2 are false
Answer: Option A

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