Question 5 of 25
2 points
the voltage in a lightbulb is given by the equation v = ir. in this equation, vis
the voltage, lis the current, and ris the resistance. what is the resistance in a
lightbulb with a voltage of 25 v and a current of 0.2 a?
a. 500
b. 125
o o oo
o c. 252
d. 752
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(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Select the three ways that the parallel-plate capacitor differs from a car battery.