In the experiment of measuring the power of the small bulb, according to the electric power formula P=UI, the voltage at both ends of the small bulb and the current in the small bulb are measured, and the electric power of the small bulb can be calculated, and the electric power measured at the rated voltage is the rated power. So the answer is: P = UI; voltage; current; rated voltage. According to the power formula: P = UI, to measure the rated power of the bulb, the voltage across the bulb should be equal to the rated voltage, the current at this time is measured, and then the power is calculated according to the formula P = UI. Method and principle for measuring the electric power of a small bulb: According to P=IU, to measure the electric power of the small bulb, it is necessary to measure the current I passing through the small bulb and the voltage U across the small bulb, which requires the ammeter and the small bulb to be connected in series, and the voltmeter is connected in parallel. At the ends of the small bulb. To measure the electric power of a small bulb at different voltages, it is necessary to connect the sliding varistor and the small bulb in series, and change the voltage across the small bulb and the current in the small bulb by changing the position of the slider of the sliding varistor. The experimental circuit diagram is shown in Figure 7-19. Measuring the electric power of a small bulb with a voltmeter and an ammeter According to the electric power formula P=IU, the current and voltage of the small bulb are measured, and the power of the small bulb can be calculated. The power measured at the rated voltage is the rated power. Adjusting the sliding varistor to change the voltage across the small bulb so that it is slightly higher or lower than the rated voltage, and the corresponding current value is measured, and the power of the small bulb not at the rated voltage can be calculated. According to the requirements of the experiment, I designed the circuit and draw the experimental circuit diagram. Then select the experimental equipment according to the circuit diagram and connect the equipment into a circuit to carry out the experiment. (1) Light the small bulb at the rated voltage, measure the current in the small bulb, and calculate the power of the small bulb. (2) Make the voltage on the small bulb about 1.2 times the rated voltage, observe the illuminating condition of the small bulb, measure the current in the small bulb, and calculate the power of the small bulb. (3) Make the voltage on the small bulb lower than the rated voltage, observe the illumination of the small bulb, measure the current in the small bulb, and calculate the power of the small bulb. Design the following form and fill in the three experimental data in the form. Analyze experimental phenomena and experimental data, and conclude the experimental results: (1) The illumination of the small bulb is determined by the actual power. The higher the power, the brighter the bulb. (2) The actual power consumed by the lamp changes with the voltage applied across it. The higher the voltage, the greater the power; (3) When the actual voltage at both ends of the bulb is equal to the rated voltage, the bulb will normally emit light; when it is lower than the rated voltage, the bulb will be darker than normal; when it is higher than the rated voltage, the bulb will be brighter than normal. (4) The actual power of the bulb can be equal to the rated power or not equal to the rated power. After the end of the experiment, it is necessary to review and analyze the experimental process, and think about whether there are any unreasonable places in the experiment process, whether there are any mistakes in the operation, what errors in the measurement results, and communication with the students. Finally write the experimental report.
Using USB drives already saves paper, but when you choose a custom wood USB key, you can help offset your impact on the environment even further. Organic materials are back in demand. You can now reap the benefits in your promotional USB project by including a pure & natural image to your brand.
This stylish wooden custom flash drive has a magnet on the inside of the cap to keep it firmly in place while not in use. With the use of trendy craftsmanship, this wooden usb key add natural richness to your branding. This wooden USB stick works great for trade industries, health spas, photographers and other hospitality businesses. Our Konchang wooden USB drives are popular with photographers & allow you to showcase your promotional materials, photos, or videos.
These wood USB keys offer all of the benefits of a traditional USB Flash Drive, but with more flair and practical applications. This rectangular wooden USB stick is created from a real piece of wood. It can easily be used to store your promotional marketing material, photos, videos or documents. The wooden USB key can be customized with your logo laser engraved or imprinted on 1 or 2 sides.
Our wood usb drive can also be imprinted, engraved or customized with a special [burn" process for a truly natural look. You may personalize the exterior finishing of the Natural wood tones in either Walnut, Mahogany, Bamboo, or Maple.
Konchang offers up to 600MB of FREE data loading so you can avoid the inconvenience and save time of doing it yourself. As with any USB Drive, we also offer a complimentary virtual proof to make your purchase decision easier.
Wooden Card Pen Drive,Wooden Usb Flash Pen Drive,Wood Usb Flash Drive Bulk,Wood Usb Flash Drive With Box,usb flash drive for photography Shenzhen Konchang Electronic Technology Co.,Ltd , https://www.konchang.com
Specifications