If you connect two identical storage batteries together in series (\"+\" to \"-\

Question

If you connect two identical storage batteries together in series ("+" to "-"), and place them in a circuit the combination will provide A) zero volts. B) twice the voltage, and the same current will flow through each. C) twice the voltage, and the same current will flow through each. D) the same voltage, and different currents will flow through each. E) the same voltage and the same current will flow through each. The net direction in which electrons flow through a circuit is: A) the direction of the conventional current. B) opposite of the direction of the conventional current. A negative charge, if free, tries to move A) away from infinity B) toward infinity C) from low potential to high potential D) from high potential to low potential. A Coulomb per second is the same as A) a volt-second. B) a Coulomb. C) an ampere D) a watt. E) a volt per second. A coffee maker, which draws 13.5 A of current has been left on for 10.0 min. What is the net number of electrons that have passed through the coffee maker? A charge of 12. C passes through an electroplating apparatus in 2.0 min. What is the average current? How much charge must pass by a point in 1.5 s for the current to be 2.0 A? A) 3.0 C B) 0.75 C C) 4.3 C D) 1.3 C

Explanation / Answer

According to the given problem,

12.) C : an ampere

13.) q = i*t = 8100 C

ne = 8100C

n = 5.62 *1022 electrons

14.) I = q/t

I = 12/(2*60) = 0.1 A

15.) q = It

q = 2*1.5 = 3C

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