For an electric field in the form of E=2z(k), what is the amount of electric charge in the box?
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For an electric field in the form of E=2z(k), what is the amount of electric charge in the box?
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- A charge of -0.7x10-6C is placed at x = 0m. A second charge of 2x10-6C is placed at x = 0.22m. What is the electric field (size and direction) at x=0.050m?The charges in the figure are q1=q2= +e and q3=+2e. The distance a= 6.00μm. a) The horizontal component of the net electric field at point P is: _____i N/C. b) The vertical component of the net electric field at point P is:______j N/C. c) The magnitude of the net electric field at point P is:_____ j N/C. d) La dirección del campo Eléctrico neto en el punto P respecto al eje x+ es:______°Plot a graph of the electric field as a function of distance r from the centre of the sphere, and write an expression for the electric field at the surface of the sphere (r=R)
- The volume charge density of the long hollow cylinder, shown in the figure below, is rho= 4 ×10^−5 C/m^3 . Let a be the inner radius and b be the outer (total) radius. If a= 10 cm and b= 15 cm. Find the electric field at: a) r=5 cm b) r=12 cm c) r=25 cmSuppose we have a charge, q1=3 μC. This charge makes an electric field some distance r=69 cm away from it. Now suppose our measurement of q1 is only accurate to within 0.1 μC, and our measurement of r is only accurate to within 1 cm. a)If we were to calculate the electric field made by that charge at the indicated distance, what would be the uncertainty in our calculation due only to the uncertainty in the size of q1? b)What is the uncertainty in our field calculation due only to the uncertainty in the charge separation r? c)What is the total uncertainty in our electric field calculation due to the uncertainty in the size of q1 and the uncertainty in the charge separation r?Now it's your turn Four charged particles are placed so that each particle is at the corner of a square. The sides of the square are 15 cm. The charge at the upper left corner is +3.0 µC, the charge at the upper right corner is -6.0 μC, the charge at the lower left corner is -2.4 µC, and the charge at the lower right corner is -9.0 μC. a. What is the net electric force on the +3.0 µC charge? b. What is the net electric force on the -6.0 µC charge? c. What is the net electric force on the-9.0 uC charge?
- Consider the electric field of a point charge.At point A the electric field strength is 9 V/m, at point B the electric field strength is 36 V/m. We measure the strength of the electric eld at the midpoint of the interval AB. What can be the measured value?A pith ball with charge 0.2 mC is brought close to a van der Graaf generator with a charge of 100 mC (500 times that of the pith ball). The pith ball exerts an electric force of 20 mN on the van der Graaf generator. What is the magnitude of the electric force that the van der Graaf generator exerts on the pith ball? Answer in mN.