# Resistance onto external connection to Wheatstone Bridge

Electricity and Magnetism Level 3

Electrical is about approximation. You are asked to draw 5 resistors for an electrical circuit. First, connect a $$1\Omega$$ resistor in series with a $$4\Omega$$ resistor. Second, connect a $$3\Omega$$ resistor in series with a $$6\Omega$$ resistor. Third, join ends of the two sets of series resistances in parallel by connecting $$1\Omega$$ to $$3\Omega$$ named point P and also $$4\Omega$$ to $$6\Omega$$ named point Q. Finally, add a 5th resistor of $$10\Omega$$ onto middle of both series sets to form a Wheatstone Bridge Circuit or a bridge circuit.

Ignore all other connectivity, what is the $$EXACT$$ resultant resistance across point P and point Q correct to 2 decimal places in $$\Omega$$?

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