Two copper wires A and B have the same length and are connected across the same battery. If  RB = 8RA,  determine the following. HINT (a) the ratio of their cross-sectional areas AB AA =  (b) the ratio of their resistivities ?B ?A =  (c) the ratio of the currents in each wire IB IA

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Two copper wires A and B have the same length and are connected across the same battery. If 
RB = 8RA,
 determine the following.
HINT
(a)
the ratio of their cross-sectional areas
AB
AA
 = 
(b)
the ratio of their resistivities
?B
?A
 = 
(c)
the ratio of the currents in each wire
IB
IA
 = 
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