A battery nas an internal resistance of 2 ohms. The most power will come out of

Question

A battery nas an internal resistance of 2 ohms. The most power will come out of the battery when the external resistance is a) zero b) 2 ohms c) 4 ohms d) infinity A wire is carrying a current (+) east. Under the wire the magnetic field is directed a) east b) down c) north d) south An electron (be careful) is moving south in a magnetic field that is east. The force on the electron is directed a) east b) north c) up d)down Magnetic fields come from charges that are a) positive b) negative c) moving d) large A capacitor is charged and remains connected to a voltage source. If a dielectric is slid between the plates, a) the charge increases b) the voltage decreases c) the electric field decreases d) the capacitance decreases Two capacitors of 5 and 10 microfarads are connected in series to a 12 volt battery. The charges in microcoulombs on the capacitors are a) 60 on the 5 and more on the 10 b) 120 on the 10 and less on the 5 c) 40 on the 5 and more on the 10 d) 40 on the 5 and the 10

Explanation / Answer

10: For most power to come out,
External resistance must be equal to internal resistance.
Hense,
External resistance = 2 ohms
Hense, B.

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