If the circle \[{{x}^{2}}+{{y}^{2}}=4\]bisects the circumference of the circle \[{{x}^{2}}+{{y}^{2}}-2x+6y+a=0\], then a equals [RPET 1999]

If the circle \[{{x}^{2}}+{{y}^{2}}=4\]bisects the circumference of th

1.	If the circle \[{{x}^{2}}+{{y}^{2}}=4\]bisects the circumference of the circle \[{{x}^{2}}+{{y}^{2}}-2x+6y+a=0\], then a equals [RPET 1999]
A.	4
B.	-4
C.	16
D.	-16
Answer» D. -16

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If the circle \[{{x}^{2}}+{{y}^{2}}=4\]bisects the circumference of the circle \[{{x}^{2}}+{{y}^{2}}-2x+6y+a=0\], then a equals [RPET 1999]

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