IB Physics: Solutions

1. Three positively charged spheres +Q are placed at the corners of an equilateral triangle as shown. Show that if a 4th charged sphere of charge -Q/√3 is placed in the centre the charges will be in equilibrium. Solution 2. A hollow metal sphere of radius 10cm is connected to a 200V supply and then isolated. It is then connected to a second isolated sphere of radius 5cm with a conductor. Calculate the final potential...

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