please answer quickly .its physics
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a) r1 and r2 are in parallel connection
and
b) V/I ratio is =r1×r2/(r1+r2)
=3×6/(3+6)
=2ohm
and
b) V/I ratio is =r1×r2/(r1+r2)
=3×6/(3+6)
=2ohm
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