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problems with solutions

Topic:Electrostatics

I.D Level Problem Problem Topic
184 High school 100 'micro' C is deposited on a conducting sphere of Radius R . A second sphere of radius 0.5 R is brought into electrical contact with the first sphere . What is the final charge distribution between the two spheres? What is the resulting Coulomb force between the two spheres if their centre to centre separation is 10 R ? . . . continues
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Electrostatics
187 High school An electron is projected with an initial speed V noat = 5.00 x 10^6 m/s into the uniform field between the parallel plates as shown in the figure "click here". The direction of the field is vertically downward, and the field is zero except in the space between the two plates . The electron enters the field at a point midway between the plates . If . . . continues
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Electrostatics
188 High school A point charge q1 = + 2.40 micro C is held stationary at the origin . A second point charge q2 = -4.30 micro C moves from the point x = 0.150 m , y = 0m , to the point x = 0.250 m my = 0.250 m . How much work is done by the electric force on q2 ? . . . continues
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Electrostatics
189 High school Two point charges are placed on the x-y plane at the coordinates : q1 = +4 nC at (15 cm, 10 cm) and q2 = -6 nC at (-10 cm, 10 cm).

a) The voltage at the origin is what ?

b) The force on a 3 nC placed at the origin is what ?

. . . continues
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Electrostatics
190 High school A 10 cm diameter metal sphere produce an electric field of 5,000 N/C towards the sphere at a point 25 cm the surface of the sphere.

a) What is the charge on the sphere ?

b) What is the voltage at the centre of the sphere ?

. . . continues
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Electrostatics
191 High school An alpha particle , starting from rest, acquired a speed of 1.38 x 10 m/s while moving through an electric potential difference .

a) What was the magnitude of the electric potential ?

b) The final energy of the alpha particle , in electron volts , what was eV ?

. . . continues
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Electrostatics
192 High school A charge of 5.0 nC is placed at the origin and another charge of -9.4 nc is placed at x = 26.0 cm.

a) Where on the x axis is the resulting electrical potential (voltage) is equal to zero volts ?

. . . continues
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Electrostatics
193 High school A parallel plate capacitor has a plate area of 126 square centimeters and a plate separation of 0.58 mm . Half the area between the plates is filled with Teflon . The other half is filled with air .

a) When 20 V is applied , what is the charge on this capacitor ?

b) What is the maximum voltage that can be applied to the capacitor ?

continues
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Electrostatics
194 High school Three capacitors of 8 uF , 6 uF and 10 uF are connected in series . when the series arrangement was charged by being attached to a voltage supply , the voltage across the 6 uF capacitor was 5.0 V .

a) What was the supply voltage ?

b) What was the energy stored in the series capacitor circuit ?

. . . continues
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Electrostatics
195 High school A 10.0 uF capacitor is charged to 25.0 V . It is then connected in series with an uncharged 4.00 uF capacitor. The series combination is finally connected to a 60 V battery.

a) What is the new potential difference across the 10.0 uF capacitor ?

b) What is the charge on the 4.00 uF capacitor ?

. . . continues
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Electrostatics
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