What is the expression for the force experienced by two parallel curre – McqOptions

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1.	What is the expression for the force experienced by two parallel current carrying conductors of unequal length?
A.	F= ( frac { mu_o}{4 pi } times frac {2I_1 I_2}{r} ) l
B.	F= ( frac { mu_o}{4 pi } times frac {I_1 I_2}{r} ) l
C.	F= ( frac { mu_o}{4 pi } times frac { frac {2I_1 I_2}{r}}{l} )
D.	F= ( frac { mu_o}{4 pi } times frac {2I_1 I_2}{4r} ) l
Answer» B. F= ( frac { mu_o}{4 pi } times frac {I_1 I_2}{r} ) l

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