1.) Draw a set of 1.5-volt cells in a series circuit so that the total battery voltage is 9 volts. A.) how many cell does it take? B.) show polarity connection. C.) suppose you connected one of the cells in part (a) so that it was backwards. what would the voltage across the battery be? Why?
A. Cells=9Volts / 1.5Volts/cell=6Cels.
B.
C. If one of the cells are connected backwards, it will subtract 1.5 volts from the remaining 5 batteries:
V = (5*1.5) - 1.5 = 7.5 - 1.5 = 6 Volts.
Draw a set of 1.5-volt cells in a series circuit so that the total battery voltage is 9 volts. A.) how many cell does it take? B.) show polarity connection. C.) suppose you connected one of the cells in part (a) so that it was backwards. what would the voltage across the battery be? Why?
A) 6cells
B)
C) The voltage across will be 0, since one connected backwards, there will be no current moving across.
To answer these questions, we need to understand the concepts of series circuits and battery polarity.
A.) To achieve a total battery voltage of 9 volts using 1.5-volt cells, we need to determine how many cells should be connected in series. In a series circuit, the voltage adds up across each cell. Therefore, we divide the total voltage (9 volts) by the voltage of each cell (1.5 volts) to find the number of cells required.
9 volts / 1.5 volts = 6 cells
So, it would take 6 cells connected in series to achieve a total battery voltage of 9 volts.
B.) The polarity connection in a series circuit is important to ensure that the cells are connected in the correct direction, maintaining a continuous flow of electric current. In this case, since all the cells are connected in series, the positive terminal of one cell should be connected to the negative terminal of the next cell.
Here is how you can draw the set of 1.5-volt cells in a series circuit with 6 cells:
+ -- - | + -- - | + -- - | + -- - | + -- - | + -- - |
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+ -- - | + -- - | + -- - | + -- - | + -- - | + -- - |
In the above diagram, the "+" signs represent the positive terminals of the cells, and the "-" signs represent the negative terminals. Each cell is connected to the next cell in a chain, creating a series circuit.
C.) If one of the cells in the series circuit is connected backward, its polarity would be opposite to the rest of the cells. As a result, the backward cell would subtract from the total voltage instead of adding to it.
Since each cell has a voltage of 1.5 volts, and one cell is connected in the opposite direction, the voltage across the battery would be:
(6 - 1) * 1.5 volts = 7.5 volts
The voltage across the battery would be reduced to 7.5 volts because the backward cell is subtracting its voltage instead of contributing to it.