A 15 ohm resistance wire is made in the form of a triangle are in the ratio of 1 is to 2 is to 3 find the current through all the answers of the triangle if a potential difference of 50 volt is connected across the longer arm
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Explanation:
To calculate resistance between A and B,we can treat resistors between BC and AB to be in series,
There equivalent hence is,
R
′
=R
BC
+R
AC
⟹R
′
=60+100=160Ω
Now this equivalent resistor is in parallel with R
AB
.
Equivalent of R
′
and R
AB
can be calculated using formula,
R
EE
=
R
AB
+R
′
R
′
R
ABA
⟹R
EQ
=
160+40
160×40
=32Ω
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