(a) Three resistors 3Omega, 4Omega, and ...

(a) Three resistors `3Omega, 4Omega, and 12Omega` are connected in parallel. What is the effective resistance of the combination?
(b) If the combination is connected to a battery of emf 6V and internal resistance `0.5Omega`, find the current drawn from the battery and terminal potential difference across the battery.

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