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Study the following circuit and find out: (i) Current in 12 Ω resistor. (ii) The difference in the readings of A1 and A2, if any. - Science

Answer in Brief
Diagram

Study the following circuit and find out:
      (i) Current in 12 Ω resistor.
      (ii) The difference in the readings of A1 and A2, if any.

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Solution

Firstly calculating the equivalent resistance in the circuit. 

`"R"_"eq" =( 24xx24)/(24+24)+12=24Ω`

(i) The current through the 12 Ω resistor is given by:

`"I" = 6/24=1/4 "A"`

(ii) The difference in the readings of A1 and Ais zero, as they are in series connected with the same wire.
Concept: Electric Current
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