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Homework Statement
In the circuit given (attached) , point S is earthed , what are the electrical potentials at point P , Q and R .
Homework Equations
Kirchoff's second law .
The Attempt at a Solution
The electric potential at point S is 0 . By applying Kirchoff's second law ,
I(2+3)=155
I=2A
i am not sure where to go from here .
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