Use ful constants: Gravitational constant G= 6.67 x 10-11 N-m,kg. Coulombs const

Question

Use ful constants: Gravitational constant G= 6.67 x 10-11 N-m,kg. Coulombs constant K 8.99 x 10, N·m2/C2 Electrical permittivityEo-8.85 x 10-12 C2/N·ml Mass of the Earth M,-5.98 x 1024 kg Radius ofthe Earth R.6.37 x 10 m Charge ofthe electron -e1.60 x 101s C Mass of the electron m. = 9.11 x 10-51 kg charge of the proton e 1.60 x 10-15C Mass ofthe proton Mass ofthe neutron m 1.67 x10 kg e proton m 1.67 x 1037 kg Questions: 1) Which ofthe follo wing is a correct statement about different capacitors connected in series or paralle 5 points) are added parallel different are added 2): The resistance ofa wire is inversely proportional: (5 points) A. The total capacitance in a parallel circuit decreases as more capacitors B. The charge on each capacitor is the same for capacitors connected in C. The voltage difference across capacitors connected in parallel is D. The total capacitance in a series circuit decreases as more capacitors A. to the applied voltage B. to the cross-sectional area ofthe wre C. to the resistivitv ofthe metal that makes the wire D. to the ength ofthe wire E. all ofthe abo ve

Explanation / Answer

1)

a) the capacitor adds up in parllel so capacitance increases

Ceq=C1+C2

False

b)voltage is same in parllel not charge

so it is False

c)False as per b

d)yes it decreases

1/ceq=1/c1+1/c2 in series

True

2) R=pL/A

so it depends on

crosssection area A

resistivity p

lengt of wire L

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