Question

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.

Answer 1

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 A₂ is zero, as they are in series connected with the same wire.