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SG_exam1review

# SG_exam1review - Chapter 15 Electric forces and fields...

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1 Example (15.14): A charge of -3 nC and a charge of -5.8 nC are separated by a distance of 50 cm. Find the position at which a third charge of 7.5 nC can be placed so that the electrostatic force on it is zero. Chapter 15 Electric forces and fields Quiz Qn. 1 If the size of the charge value is tripled for both of two point charges maintained at a constant separation, the mutual force between them will be changed by what factor? 1. 9 2. 3 3. 1/3 4. 1/9

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2 If a negative charge is positioned between two positive charges q 1 and q 2 , the force q 1 applies to q 2 will be 1. greater 2. smaller 3. the same Quiz Qn. 2 Chapter 16 Electrical energy and capacitance Example 16.1: A uniform electric field of magnitude 375 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. (a) what is the work done by the field on the electron (b) what is the final velocity of the electron?
3 Quiz Qn. 3 A free electron is in an electric field. With respect to the field, it experiences a force acting: 1. parallel (in the direction of the field)

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