Three cells connected in series and note the effect on the brightness of a lamp they must conclude that more cells in series will cause the strength to increase if the the resistance does not change list 4 specifications
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Answer:
Multiple Choice
8. If an electric circuit was analogous to a water park, then the battery would be analogous to the ____.
a. pipes which carry the water through the water circuit
b. pump which supplies energy to move the water from the ground to a high elevation
c. the people which flow from the top of the water ride to the bottom of the water ride
d. the rate at which water is pumped onto the slide
e. the change in potential energy of the riders
f. the top of the water slide
g. the bottom of the water slide
h. the long lines which exist at the park
i. the speed at which riders move as they slide from the top to the bottom of the ride
Answer
water ride at a water park is analogous to an electric circuit. First of all, there is an entity which flows - water flows in a water park and (in conventional terms) + charge flows in an electric circuit. In each case, the fluid flows spontaneously from a high energy location to a low energy location. The flow is through pipes (or slides) in a water park and through wires in an electric circuit. If the pipes or the wires are broken, then there can be no continuous flow of fluid through the circuit. A complete loop is required to establish the circuit.
This flow of fluid - whether of water or charge - is possible when a pressure difference is created between two locations in the circuit. In the water park, the pressure difference is the difference in water pressure created by two locations of different heights. Water flows spontaneously from locations of high pressure (high altitude) to locations of low pressure (low altitude). In an electric circuit, the electric potential difference between the two terminals of a battery or energy source provides the electric pressure which presses on charge to move them from a location of high pressure (high electric potential) to a location of low pressure (low electric potential).
Energy is required to move the fluid uphill. In a water park, a water pump is used to do work upon the water in order to raise it from the low height back up to the high height. The water pump does not supply the water; the water which is already in the pipes. Rather, the water pump supplies the energy to pump the water from the location of low energy and low pressure to the location of high energy and high pressure. In an electric circuit, the battery is the charge pump which pumps the charge through the battery from the location of low electric potential energy (the - terminal) to the location of high electric potential energy (the + terminal). The battery does not supply the electric charge; the charge is already in the wires. The battery simply supplies the energy to do work on the charge in pumping it uphill.