Step 1:
\Observe the circuit,
\Potential at is
and Potential at
is
.
Find the terminal differece of the circuit.
\.
Voltage at the battery is .
Find the resultant voltage at the amperemeter .
Find the current at the amperemeter.
\Ohms law: .
Substtitute and
in the above expression.
A.
Solution:
\Current passing through the amperemeter is A.
\
\