Five resistors AB, BC, CD, DE and
EA are connected to form a closed
ring ABCDEA. A supply of 90V is
connected
across AD, A being positive. The
following is known about the
resistors: AB is 10 ohms, BC is of
unknown value R1 ohms, CD is
of unknown value R2 ohms. DE
is 6 ohms and EA is 9 ohms. A
high resistance voltmeter (taking
negligible current) when connected
across BE reads 34V with B positive
and when connected across CE
reads 6V with E positive. Find the
values of R1 and R2, the current in
branch ABCD and the
main supply current.
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