4/3/20a auiz 9 1. A calibrated SPM machine with a minimum vertical resolution of

Question

4/3/20a auiz 9 1. A calibrated SPM machine with a minimum vertical resolution of O.2om is capable of detecting nanoparticles_nm in diamete a. cO.2 c. SO.2 2. The electric force on a 3 x 03C charge particle located in a 2 x 10 s N/C electric field is N. a. 1.5x10 b. -6 x 10 C. 6 x 10 d. 6x1014 3. An MFM machine can be used to study a. magnetic nanoparticles b. electrically charged nanoparticles C. nanoparticles made of copper and gold atoms d. all of the above Two parallel conducting plates with opposite charges of ± 3 x 104c are connected to a 1.5V battery. The capacitance created by the charged plates and battery combination is Farad 4. a. 2 x 10s b. 4.5 x 104 C. 2 x 10- d. 4.5 x 10 In the question 4, charged plates are separated 10cm from each other. The electric field between two charged plates is- 5. a. 1.5 V/m c. 15 m/v d. 15V/m

Explanation / Answer

1)

option ( d)

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2)

electric force F = E*q

electric force F = 2*10^-5*3*10^-9 = 6*10^-14 N

OPTION (b )

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(3)

MFM - magnetic force microscopy used to study about magnetic nano particles

OPTION ( a )

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(4)

capacitance C = q*v = 3*10^-5*1.5 = 4.5*10^-5 F

OPTIOn ( d )

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Electric field E = V/d

V = potential = 1.5

d = seperation = 10 cm = 0.1 m

electric field E = 1.5/0.1 = 15 V/m

OPTION ( d )

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