You are measuring the current in a circuit that is operated on an 18 V – McqOptions

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1.	You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?
A.	9 V
B.	900 mV
C.	0 V
D.	18 V
Answer» B. 900 mV

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