What is a test charge ? What should be its magnitude ?
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A Test Charge is an imaginary construct used to map an electric field. It carries an infinitesimal amount of positive charge. Since it has an infinitesimal amount of charge, it experiences an infinitesimal amount of force in a given electric field.
The strength of the field is given by E = F/q. Even though the force and charge are infinitesimal, the ratio is not!
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The strength of the field is given by E = F/q. Even though the force and charge are infinitesimal, the ratio is not!
it's helpful for u
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