This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Okay, KING, here's the solution in English.
a) To light a bulb using a dry cell and connecting wires:
Step 1: Take one dry cell and one bulb. Step 2: Connect one end of a connecting wire to the positive (+) terminal of the dry cell. Step 3: Connect the other end of that wire to one terminal of the bulb. Step 4: Take a second connecting wire and connect one end to the negative (-) terminal of the dry cell. Step 5: Connect the other end of the second wire to the remaining terminal of the bulb. Step 6: Ensure all connections are firm and the circuit is complete. The bulb will light up.
b) To obtain the maximum and minimum current in the bulb:
• Maximum current: Connect all six dry cells in series. This means connecting the positive (+) terminal of one cell to the negative (-) terminal of the next cell, and so on, until all cells are linked. Then connect the ends of this series arrangement to the bulb. Connecting cells in series increases the total voltage, thereby increasing the current flowing through the bulb.
• Minimum current: Connect all six dry cells in parallel. This means connecting all positive (+) terminals together and all negative (-) terminals together. Then connect these two combined points (all positives and all negatives) to the bulb. Connecting cells in parallel provides a voltage equal to that of a single cell, thus yielding the minimum current compared to a series connection.
c) Sources of errors and how they can be eliminated:
• Loose connections: Wires are not properly attached to the terminals. How to eliminate: Ensure all connections are tight and securely fastened.
• Damaged or broken wires: Wires may have internal breaks or damaged insulation. How to eliminate: Carefully inspect wires for any damage and use intact wires.
• Weak or dead dry cells: Cells may have run out of charge. How to eliminate: Use new, fully charged dry cells.
• Faulty bulb: The bulb may have a broken filament. How to eliminate: Test with another bulb or use a new one.
• Incorrect polarity: Connecting cells in series with incorrect polarity (e.g., positive to positive). How to eliminate: Always connect the positive (+) terminal of one cell to the negative (-) terminal of the next cell when connecting in series.
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Okay, KING, here's the solution in English. a) To light a bulb using a dry cell and connecting wires: Step 1: Take one dry cell and one bulb.
This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.