An idealized ammeter is connected to a battery as shown below. Find (a) the reading of the ammeter, (b) the current through the 4.00-Ω resistor, (c) the terminal voltage of the battery.
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In the figure below, a voltmeter of resistance RV=300, and an ammeter of resistance RA =3.00 Ω are being used to measure a resistance R in a circuit, that also contains a resistance R0 = 100 Ω and an ideal battery of emf -18.0 v. Resistance R is given by R v, where v s the voltmeter reading and The current in resistance R However, the ammeter reading is not I, but rather, which is, plus the current through the voltmeter. Thus, the ratio of the two-meter readings is not R, but only an apparent resistance R' = Vr If R 75.0 Ω: (a) What is the ammeter reading? (b) What is the voltmeter reading?
A real battery with emf 12.0 V and internal resistance 2.00 Ω is connected to a resistance of 4.00 Ω.
a. What is the current through the battery?
b. What is the terminal voltage of the battery?
