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You are given two circuits with two batteries of emf & and internal resistance R1 each. Circuit A has the batteries connected in series with a resistor of resistance R2, and circuit B has the batteries connected in parallel to an equivalent resistor.
1) What is the current through the resistor of resistance R2 in circuit A?
2) Calculate the current Ib through the resistor of resistance R2 for circuit B.
3) What is the power dissipated in R2 when