the force on a 10 m c charge is 7 newtons. what is the magnitude of the electric field?
DESCRIPTION
An electric field is said to exist in a region of space if an electric charge placed in that region is subject to an electric force. An electric line of force is a line so drawn that a tangent to it at any point indicates the orientation of the electric field at that point. - PowerPoint PPT PresentationTRANSCRIPT
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An electric field is said to exist in a region of space if an electric charge placed in that region is subject to an electric force.
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An electric line of force is a line so drawn that a tangent to it at any point indicates the orientation of the electric field at that point.
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Lines of force originate at the surface of a positively charged body and terminate at the surface of a negatively charged body.
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A line of force shows the direction in which a positive test charge would be accelerated in that part of the field.
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The electric field intensity is proportional to the number of lines of force per unit area normal to the field.
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The electric field intensity, E, at any point in an electric field is the force per unit positive charge at that point.
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E = F/q
E is electric field intensity in newtons per coulomb, N/CF is the force in Newtonsq is the test charge in coulombs
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The force on a 10 C charge is 7 Newtons. What is the magnitude of the electric field?
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An electrostatic charge is placed in an electric field that has an intensity of 1.50 x 105 N/C. The charge experiences a force of 2.10 N. Calculate the magnitude of the charge in C.
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SinceE = F/q andF = kq1q2/d2,then E = F/q = kq1q2/qd2.
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E = kq1q2/qd2
The test charge q cancels out and E = kq/d2.
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E = kq/d2
This is the formula for the electric field strength at a distance “d” produced by a point charge “q”.This field strength is a vector.
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What is the electric field 0.5 m from a 7 C charge? What is the direction of the field?
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What is the electric field 0.4 m from a -3 C charge? What is the direction of the field?
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