This diagram shows a conducting sphere of radius 0.80 cm carrying a charge of + 6.0
Question:
This diagram shows a conducting sphere of radius 0.80 cm carrying a charge of + 6.0 × 10−8 C resting on a balance.
Figure 22.22
a. Calculate the electric field at the surface of the sphere.
b. An identical sphere carrying a charge of −4.5 × 10−8 C is held so that its centre is 5.0 cm vertically above the centre of the first sphere.
i. Calculate the electric force between the two spheres.
ii. Calculate the new reading on the balance.
c. The second sphere is moved vertically downwards through 1.5 cm. Calculate the work done against the electric field in moving the sphere.
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Step by Step Answer:
a The electric field at the surface of the sphere can be calculated using Coulombs law E k q r2 wher...View the full answer
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Related Book For 
Cambridge International AS And A Level Physics Coursebook
ISBN: 9781108859035
3rd Edition
Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside
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