{"id":1169,"date":"2022-05-05T15:15:55","date_gmt":"2022-05-24T10:35:08","guid":{"rendered":"https:\/\/experiments.school\/?post_type=product&p=1169"},"modified":"2022-07-01T10:27:40","modified_gmt":"2022-07-01T08:27:40","slug":"add-and-subtract-voltages","status":"publish","type":"product","link":"https:\/\/experiments.school\/en\/product\/add-and-subtract-voltages\/","title":{"rendered":"108 – Add and subtract voltages"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Interconnecting<\/span> batteries<\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/strong><\/h2>\n

Introduction to:\u00a0<\/span>\u00a0<\/span><\/h2>\n

Voltage concept, voltage measurement, properties of electric voltage, electric potential<\/span><\/p>\n

https:\/\/experiments.school\/wp-content\/uploads\/2022\/05\/108.mp4<\/p>\n

Material:\u00a0<\/span>\u00a0<\/span><\/h2>\n
    \n
  • Voltmeter (DC voltage = DC, measuring range 0…5V).\u00a0<\/span>\u00a0<\/span>\u00a0<\/span><\/li>\n
  • 1.5V batteries (3)\u00a0<\/span>\u00a0<\/span>\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

    Setup and execution:\u00a0<\/span>\u00a0<\/span><\/h2>\n
      \n
    • measure the voltage of a battery\u00a0<\/span>\u00a0<\/span><\/li>\n
    • place two batteries together, negative pole to positive pole, and measure the voltage again\u00a0<\/span>\u00a0<\/span><\/li>\n
    • add a third battery, again negative pole to positive pole, and measure the voltage again\u00a0<\/span>\u00a0<\/span><\/li>\n
    • turn the third battery so that its positive pole is in contact with the positive pole of the second battery, and measure this voltage as well\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

      Observation:\u00a0<\/span>\u00a0<\/span><\/h2>\n
        \n
      • If we connect opposite poles, the individual voltages add up to the total voltage.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • In the last experiment, the voltage of the reversed battery subtracts from the sum of the voltages of the other two batteries <\/span>\u00a0<\/span><\/li>\n<\/ul>\n

        Didactic potential:\u00a0<\/span>\u00a0<\/span><\/h2>\n

        \u00a0<\/span> D<\/span>emonstration of voltage as potential difference\u00a0<\/span>\u00a0<\/span><\/p>\n","protected":false},"featured_media":1348,"template":"","meta":[],"product_brand":[],"product_cat":[975,874],"product_tag":[],"class_list":{"0":"post-1169","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-2-voltage-current","7":"product_cat-b-electricity","8":"","9":"woocommerce-text-align-left","10":"woocommerce-image-align-center","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/product\/1169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/media\/1348"}],"wp:attachment":[{"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/media?parent=1169"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/product_brand?post=1169"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/product_cat?post=1169"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/experiments.school\/en\/wp-json\/wp\/v2\/product_tag?post=1169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}