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Physics Current Electricity Level: High School

A total resistance of 3.0 Ohm is to be produced by combining an unknown resistor R with a 12 Ohm resistor . What is the value of R and how is to be connected to the 12 Ohm resistor ?

a) 4.0 Ohm, parallel

b) 4.0 Ohm, series

c) 2.4 Ohm, parallel

d) 2.4 Ohm, series

e) 9.0 Ohm, series