{"id":128,"date":"2014-11-10T08:23:30","date_gmt":"2014-11-10T08:23:30","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-4d\/"},"modified":"2014-11-17T08:26:56","modified_gmt":"2014-11-17T08:26:56","slug":"ppp-exercise-4d","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-4d\/","title":{"rendered":"PPP Exercise 4D"},"content":{"rendered":"

1.\u00a0\u00a0 <\/strong>State an equation that links power, current and voltage.\u00a0<\/strong><\/p>\n

2.<\/strong>\u00a0\u00a0 Calculate the missing values in the table below.<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a>3.<\/strong>\u00a0\u00a0 A food processor draws a current of 2 A. Calculate the power of the processor if it is connected to the mains supply at 230 V.<\/p>\n

4.<\/strong>\u00a0\u00a0 A mains appliance draws a current of 6 A. Calculate its power.<\/p>\n

5.<\/strong>\u00a0\u00a0 What current will be drawn by a low voltage 12 V, 50 W light bulb.<\/p>\n

6.<\/strong>\u00a0\u00a0 A small hand held torch has a power of 3 W. Calculate the voltage of the supply if the current to the torch filament is 500 mA.<\/p>\n

<\/a>\"\"<\/a>7.<\/strong>\u00a0\u00a0 A mains hair drier is rated at 1200 W<\/p>\n

(a<\/em>)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 What will be the current to the hair drier when operating at its maximum power?<\/p>\n

(b<\/em>)\u00a0\u00a0 The drier contains a fan and heating elements. Which of these will consume the most power?<\/p>\n","protected":false},"excerpt":{"rendered":"

1.\u00a0\u00a0 State an equation that links power, current and voltage.\u00a0 2.\u00a0\u00a0 Calculate the missing values in the table below. 3.\u00a0\u00a0 A food processor draws a current of 2 A. Calculate the power of the processor if it is connected to the mains supply at 230 V. 4.\u00a0\u00a0 A mains appliance draws a current of 6 … Continue reading PPP Exercise 4D<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-128","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/comments?post=128"}],"version-history":[{"count":3,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/128\/revisions"}],"predecessor-version":[{"id":165,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/128\/revisions\/165"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/media?parent=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}