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Q2. a) Explain why the static electric field is always zero inside an isolated conductor. What is the consequence of this for the electric field at the surface of the conductor? b) A square, thin aluminium plate has dimensions of 20 mm x 20 mm x 0.3 mm. It carries a charge of + 17pC. (i) How many electrons have been transferred in charging the plate, assuming its initial charge was -5pC. (ii) Sketch the distribution of electric field and equipotential surfaces in the space outside the plate, labelling the important features. (iii) Stating any approximations you make, estimate the electric field magnitude on the surface of the plate. (iv) Again stating any approximations you make, estimate the electric field magnitude and electric potential a distance of 10m from the plate. c) The plate is now placed parallel to a large, flat aluminium plate, held at an electric potential of -4.5V. Assume that no charge has been lost and that the plates have a final (constant) separation of 1.5mm. (i) Estimate the electric field magnitude between the plates and hence estimate the voltage across the plates, stating your approximations. (ii) Sketch the electric field distribution and equipotential surfaces in and around the plates, labelling the important features. (iii) Determine precisely where the electric potential is zero.

Q2. a) Explain why the static electric field is always zero inside an isolated conductor. What is the consequence of this for the electric field at the surface of the conductor? b) A square, thin aluminium plate has dimensions of 20 mm x 20 mm x 0.3 mm. It carries a charge of + 17pC. (i) How many electrons have been transferred in charging the plate, assuming its initial charge was -5pC. (ii) Sketch the distribution of electric field and equipotential surfaces in the space outside the plate, labelling the important features. (iii) Stating any approximations you make, estimate the electric field magnitude on the surface of the plate. (iv) Again stating any approximations you make, estimate the electric field magnitude and electric potential a distance of 10m from the plate. c) The plate is now placed parallel to a large, flat aluminium plate, held at an electric potential of -4.5V. Assume that no charge has been lost and that the plates have a final (constant) separation of 1.5mm. (i) Estimate the electric field magnitude between the plates and hence estimate the voltage across the plates, stating your approximations. (ii) Sketch the electric field distribution and equipotential surfaces in and around the plates, labelling the important features. (iii) Determine precisely where the electric potential is zero.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q2. a) Explain why the static electric field is always zero inside an isolated conductor. What is the consequence of this for the electric field at the surface of the conductor? b) A square, thin aluminium plate has dimensions of 20 mm x 20 mm x 0.3 mm. It carries a charge of + 17pC. (i) How many electrons have been transferred in charging the plate, assuming its initial charge was -5pC. (ii) Sketch the distribution of electric field and equipotential surfaces in the space outside the plate, labelling the important features. (iii) Stating any approximations you make, estimate the electric field magnitude on the surface of the plate. (iv) Again stating any approximations you make, estimate the electric field magnitude and electric potential a distance of 10m from the plate. c) The plate is now placed parallel to a large, flat aluminium plate, held at an electric potential of -4.5V. Assume that no charge has been lost and that the plates have a final (constant) separation of 1.5mm. (i) Estimate the electric field magnitude between the plates and hence estimate the voltage across the plates, stating your approximations. (ii) Sketch the electric field distribution and equipotential surfaces in and around the plates, labelling the important features. (iii) Determine precisely where the electric potential is zero.
Transcribed Image Text:Q2. a) Explain why the static electric field is always zero inside an isolated conductor. What is the consequence of this for the electric field at the surface of the conductor? b) A square, thin aluminium plate has dimensions of 20 mm x 20 mm x 0.3 mm. It carries a charge of + 17pC. (i) How many electrons have been transferred in charging the plate, assuming its initial charge was -5pC. (ii) Sketch the distribution of electric field and equipotential surfaces in the space outside the plate, labelling the important features. (iii) Stating any approximations you make, estimate the electric field magnitude on the surface of the plate. (iv) Again stating any approximations you make, estimate the electric field magnitude and electric potential a distance of 10m from the plate. c) The plate is now placed parallel to a large, flat aluminium plate, held at an electric potential of -4.5V. Assume that no charge has been lost and that the plates have a final (constant) separation of 1.5mm. (i) Estimate the electric field magnitude between the plates and hence estimate the voltage across the plates, stating your approximations. (ii) Sketch the electric field distribution and equipotential surfaces in and around the plates, labelling the important features. (iii) Determine precisely where the electric potential is zero.
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