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A resistor (resistance = R) is connected first in parallel and then in series with a 1.53 resistor.

A resistor (resistance = R) is connected first in parallel and then in series with a 1.53 resistor. A battery delivers 7 times as much current to the parallel combination as it does to the series combination. 

 a) Determine the two possible values for R, the greater value being the answer to part (a).

 b) please include units for both potential difference

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