6) Calculate the speed of a proton that is accelerated from rest through a poten

Question

6)

Calculate the speed of a proton that is accelerated from rest through a potential difference of 229V. Answer in units of m/s.

7)

What potential difference is needed to stop an electron having an initial speed of 5.40x105m/s? Answer in units of Volts

8)

An electron moving parallel to x axis has an initial speed of 2.56x106 m/s at the origin.Its speed is reduced to 3.00x105 m/s at the point x=3.13cm. Calculate the potential difference, in Volts, between the origin and that point.

9)

The difference in potential between the accelerating plates of a TV set is about 24.8kV. If the distance between these plates is 1.50cm, find the magnitude of the uniform electric field in this region. Answer in units of V/m

10)

Two conductors having net charges of +20.0mC have a potential difference of 14.0V. Determine the capacitance of the system. Answer in mF

11)

An air-filled capacitor consists of two parallel plates, each with an area of 8.70cm2, separated by a distance of 1.65mm.

a) Calculate the capacitance. Answer in pF

b) If a 23.0-V potential difference is applied to these plates, calculate the charge on each plate. Answer in pC.

c) How much energy, in Joules, is stored then in the capacitor?

d) What if we fill the space between the plates with paper whose dielectric constant ? is 9.0, what would be the new capacitance in pF?

Use 8.85 x 10-12 F/m for ?o, the permittivity of free space.

12)

A capacitor is rolled from two strips of aluminum separated by two strips of paraffin-coated paper. Each strip is 4.90cm wide. The foil is 7.00?m thick, and the paper is 56.0?m thick. What length, in cm, should the strips be if a capacitance of 36.0nF is desired? Use 3.7 for the dielectric constant ? of the coated paper and 8.85 x 10-12 F/m for ?o, the permittivity of free space.

13)

a) Determine the capacitance, in pF, of a nylon-filled parallel-plate capacitor (dielectric constant=3.40) having a plate area of 5.90cm2 and plate separation of 740

Explanation / Answer

16 a) 1872 pC.
16 b) 6 V
16 c) 6 V
16 d) 6 V
16 e) 1404 pC
17 a) 456 pC
17 b) 456 pC
17 c) 456 pC
17 d) 2V
17 e) 4 V

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