Which of the following is true about a test charge in an electric field? A None of the above.
B The test charge is used to measure the electric field strength.
The test charge is always larger in magnitude than the source charge.
D The test charge that is used to measure the velocity of the source charge.

The charge that is used to measure the electric field strength is referred to as a test charge since it is used to test the field strength. The test charge has a quantity of charge denoted by the symbol q. ... Since electric field is defined as a force per charge, its units would be force units divided by charge units.

Explanation:

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