Does the size of a 1,5V cell(battery) affect the internal resistance of a circuit containing: 3 different size batteries,multimeter,connecting wire,a light bulb resistor.How do i set up this experiment.I'm really lost, please help. Thank you in advance
Not only the size but the age of the battery will affect the circuit's internal resistance. The age also affects the zero-current EMF, especially for Ni-MH and alkaline batteries.
If you measure the battery EMF with and without the light bulb in the circuit, and measure the current low, you may be able to deduce both the zero-current EMF and the internal resistance.
You will have to perform the measurement with three different battery sizes. Try fresh AAA, AA and D alkalaine types. The zero-current EMF should be 1.55 V in each case.
To determine if the size of a 1.5V cell affects the internal resistance of a circuit, you can set up an experiment as follows:
1. Gather the materials: 3 different size 1.5V batteries (e.g., AAA, AA, and D), a multimeter, connecting wires, and a light bulb resistor.
2. Connect one end of the connecting wire to the negative terminal of the multimeter and the other end to one side of the light bulb resistor.
3. Connect the positive terminal of the multimeter to the positive terminal of one of the batteries using another connecting wire.
4. Connect the negative terminal of the battery to the other side of the light bulb resistor using another connecting wire.
5. Repeat steps 3 and 4 for the other two batteries, so you have three different setups with three different-size batteries.
6. Make sure all connections are secure and tight.
7. Switch on the multimeter and set it to measure current (amps).
8. Observe the current reading on the multimeter for each battery setup.
9. Take note of the current readings and compare them. If the batteries have different current readings, then the internal resistance of the batteries is affecting the circuit.
10. Analyze and interpret the results.
Remember, it's important to exercise caution when working with electricity and ensure you follow safety guidelines such as wearing insulated gloves, avoiding short circuits, and not connecting wires to live circuits.