This question requires a numeric or algebraic answer. In order to receive full c
ID: 2302901 • Letter: T
Question
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What is the net force (magnitude and direction) on each wire in figure 17?
Graphical Description
Figure 17 shows where three 50-cm long parallel wires separated by 2.0 cm. The center carries a current of 10 A to the left. The other two each carry a current of 10 A to the right.
Graphical Description
Figure 17 shows where three 50-cm long parallel wires separated by 2.0 cm. The center carries a current of 10 A to the left. The other two each carry a current of 10 A to the right.
Explanation / Answer
force between two parallel wires is given by F = u0i1i2L/2pid
where u0 = constnat = 4pi*10^-7 H/m
i1, i2 are the currents
L s the length o the wire
d is the distqance between these two wires
if current are in same directiion, there exists , they exert attractive force on each other
and if currents are in opposite direction, they exert repulsive force
so now by
1. Fnet>
= 4pi *10^-7 *10*10*0.5/2pi)(1/0.02-1/0.04)
Fnet 5*10^-4 N to the left side
-----------------------------------------------------------------------
Fnet on middle wire= 4pi*10^-7 * 10*10*0.05/2pi)(1/0.02 +0/0.02)
Fnet = 1*10^-4 N
----------------------------------------------------------
Fnet of wire 3 = F13 -F12
= 4pi *10^-7 *10*10*0.5/2pi)(1/0.02-1/0.04)
Fnet N to the right side
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