Solve.If the resistance in an electrical circuit is held constant, the amount of current flowing through the circuit is directly proportional to the amount of voltage applied to the circuit. When 4 volts are applied to a circuit, 100 milliamperes of current flow through the circuit. Find the new current if the voltage is increased to 5 volts.
A. 5 milliamperes
B. 80 milliamperes
C. 125 milliamperes
D. 150 milliamperes
Answer: C
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A. 
B. 
C. 
D. 
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