Do you notice a pattern in how the current behaves at the junctions? Write this pattern down.ġ6. Take measurements of the current at all points within the circuit. The components are said to be in parallel with each other. Also measure the battery voltage (Keep this constant throughout the experiment) and fill in the table below.Ī parallel circuit is one in which all the components each have their own loop to the circuit. Change the resistances of the two bulbs and measure the potential difference across them. Use an Ammeter to check that your answer to question 6 is still correct. Describe the relationship between the resistance and the current.ġ2. Keeping the voltage constant, alter the resistance of the bulb and fill in the table below.ġ1. Now right click on the cell and set the voltage to 25 volts. Describe how the current changes as the PD is increased. Record the Ammeter reading for each voltage reading.ĩ. Now right click on the battery and change the voltage to the amounts shown in the table below. Right click on the bulb and change the resistance to 10 ohms. How varying voltage affects the currentĨ. Write a sentence describing how the current changes. Return the Ammeter to the original position and then start increasing the number of cells within the circuit. What do you notice? Write a sentence describing your findings.ħ. Try moving the Ammeter to other points within the circuit. Write a sentence describing how to find the total voltage across a number of cells in series. Add additional cells to the circuit and measure the total potential difference across all the cells. Use the voltmeter to measure the potential difference (voltage) across the bulb. Use the voltmeter to measure the potential difference (voltage) across the battery. We say that they are ‘in series’ with each other. Series circuits:Ī series circuit is one in which all the components come one after the other in a single loop. You are going to take measurements of current and potential difference in series and parallel circuits.Ĭlick on ‘Lab’ to get started. The aim of this activity is to use the Electric Circuits simulation above (by Phet) to investigate the properties of circuits and to discover some circuit ‘rules’ that always apply to circuits. Step 4: When the drawing is complete, check it and share it with your teammates or export it as an image, PDF or Visio file.Activity: discover how series and parallel circuits work When lines intersect on the canvas, there will shows line jumps automatically and you can adjust the jump types to your liking. Step 3: Draw straight and elbowed lines bewtween electrical components that represent wire connections. Drag and drop components onto the drawing page. Step 2: Choose the electrical diagram symbols from the shape library. Step 1: Think about who will see your electrical diagram and decide whether your drawings should be schematic or pictorial. You can drag and drop your desired electrical symbols on the Edraw canvas, then connect them without hassle. The following electrical engineering diagram is created by Edraw electrical diagram software. Some of the qualifying symbols also support point-and-click editor. The shown semiconductor and electron tube shapes are all high-quality in vector format, highly scalable, and easily editable.Īll of Edraw's electrical elements support drag-and-drop use. It is advisable to use standard symbols for more logical schematic diagrams. Rest the pointer over the symbol, and then the floating button will show at the upper right corner. Most switch and relay shapes are designed with a quick floating button for easy editing. They are located in the libraries next to the canvas, for easy search and use. What included are a group of pre-drawn electrical symbols for making electrical diagrams three times faster than hand drawing. Symbols like the ground, chassis, battery, and resister can cover the needs to draw an electrical diagram as much as possible. Use the Electrical diagram symbols to create an electrical diagrams effortlessly.
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