Problem Set: Electric Force and Field  1. A positively charged rod is brought close to a neutral piece of paper,     which...
Problem Set: Electric Force and Field  6. Three positive particles of equal charge +11.0µC, are located at the     corners...
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Electric force and field problem set

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Electric force and field problem set

  1. 1. Problem Set: Electric Force and Field 1. A positively charged rod is brought close to a neutral piece of paper, which it attracts. Draw a diagram showing the separation of charge and explain why attraction occurs. ..................................................................... 2. The form of Coulomb’s law is very similar to that for Newton’s law of universal gravitation. What are the differences between these two laws? Compare also gravitational mass and electric charge. ..................................................................... 3. Explain why the test charges we use when measuring electric fields must be small. ..................................................................... 4. Draw the electric field lines surrounding two negative electric charges a distance l apart. ..................................................................... 5. Why can’t electric field lines cross? .....................................................................Mrs. Kate Rimando IB Physics 11 SY 2010-2011
  2. 2. Problem Set: Electric Force and Field 6. Three positive particles of equal charge +11.0µC, are located at the corners of an equilateral triangle of side 15.0cm. Calculate the magnitude and direction of the net force on each particle. ..................................................................... 7. Calculate the electric field at one corner of a square 52.5cm on a side if one corner is occupied by a +45.0µC charge and the other three are occupied by −27µC charges. .....................................................................Mrs. Kate Rimando IB Physics 11 SY 2010-2011

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