{"id":129,"date":"2014-11-10T08:23:41","date_gmt":"2014-11-10T08:23:41","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-4e\/"},"modified":"2014-11-17T08:30:59","modified_gmt":"2014-11-17T08:30:59","slug":"ppp-exercise-4e","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/ppp-exercise-4e\/","title":{"rendered":"PPP Exercise 4E"},"content":{"rendered":"

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

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

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

3.<\/strong>\u00a0\u00a0 A heating element has a resistance of 57\u00b75\u00a0\u03a9 and draws a current of 4 A. Calculate its power.<\/p>\n

4.<\/strong>\u00a0\u00a0 What current will be drawn by a low voltage 48 W light bulb which has a resistance of 3 \u03a9.<\/p>\n

5.\u00a0\u00a0 <\/strong>A circuit has a resistance of 4 k\u03a9. Calculate the power of the circuit if the current flowing in the circuit is 3 mA.<\/p>\n

\"\"<\/a>6.<\/strong>\u00a0\u00a0 A 100 \u03a9 resistor used in a circuit is rated at 0\u00b75 W. What is the maximum current that can flow through it if used at its maximum rating?<\/p>\n

7.<\/strong>\u00a0\u00a0 A portable camping heater has a power rating of 920 W. It is connected to a mains power point at 230 V.<\/p>\n

(a<\/em>)\u00a0\u00a0 What will be the current to the heater when it is operational?<\/p>\n

(b<\/em>)\u00a0\u00a0 Calculate the resistance of the heating element.<\/p>\n","protected":false},"excerpt":{"rendered":"

1.\u00a0\u00a0 State an equation that links power, current and resistance. 2.\u00a0\u00a0 Calculate the missing values in the table below. 3.\u00a0\u00a0 A heating element has a resistance of 57\u00b75\u00a0\u03a9 and draws a current of 4 A. Calculate its power. 4.\u00a0\u00a0 What current will be drawn by a low voltage 48 W light bulb which has a … Continue reading PPP Exercise 4E<\/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-129","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/129","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=129"}],"version-history":[{"count":4,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/129\/revisions"}],"predecessor-version":[{"id":166,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/pages\/129\/revisions\/166"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphyprelimpractice\/wp-json\/wp\/v2\/media?parent=129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}