[{"id":166315,"question":"The unit of potential difference is:","choices":[{"text":"Volt","value":"A"},{"text":"Coulomb","value":"B"},{"text":"Ampere","value":"C"},{"text":"Joule","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":166314,"question":"The resistance of conductors is due to:","choices":[{"text":"Protons","value":"A"},{"text":"Fixed atoms","value":"B"},{"text":"Molecules","value":"C"},{"text":"Neutrons","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":166313,"question":"Battery converts chemical energy into which energy:","choices":[{"text":"Mechanical","value":"A"},{"text":"Electrical","value":"B"},{"text":"Thermal","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":166312,"question":"The rate of flow of charge through any cross-sectional area is called:","choices":[{"text":"potential difference","value":"A"},{"text":"Energy","value":"B"},{"text":"Coulomb","value":"C"},{"text":"Electric current","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":166311,"question":"The ampere is a unit of:","choices":[{"text":"Energy","value":"A"},{"text":"Potential differrence","value":"B"},{"text":"Electric potential","value":"C"},{"text":"Electric current","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":166310,"question":" The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:","choices":[{"text":"2Ω<p class=\"MsoNormal\"><!--[endif]--><span style=\"font-size:14.0pt;\r\nline-height:107%;font-family:&quot;Times New Roman&quot;,serif;mso-ascii-theme-font:major-bidi;\r\nmso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi\"><o:p></o:p></span></p>","value":"A"},{"text":"4Ω","value":"B"},{"text":"8Ω","value":"C"},{"text":"12Ω","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":166309,"question":"What is the power rating of a lamp connected to a 12 v source when it carries 2.5 A?","choices":[{"text":"4.8 W","value":"A"},{"text":"14.5 W","value":"B"},{"text":"30 W","value":"C"},{"text":"60 W","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":166308,"question":"If we double both the current and the voltage in a circuit while keeping its resistance constant, the power.","choices":[{"text":"remains unchanged","value":"A"},{"text":"halves","value":"B"},{"text":"doubles","value":"C"},{"text":"four time","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":166307,"question":"Which we double the voltage in a simple electric circuit. We double the","choices":[{"text":"Current","value":"A"},{"text":"Power","value":"B"},{"text":"Resistance","value":"C"},{"text":"both a and b","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":166306,"question":"Electric potential and e.m.f.","choices":[{"text":"are the same terms","value":"A"},{"text":"are the different terms","value":"B"},{"text":"have different units","value":"C"},{"text":"both b and c","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":166305,"question":"What should household appliances be connected in parallel with the voltage source?","choices":[{"text":"to increase the resistance of the circuit","value":"A"},{"text":"to decrease the resistance of the circuit","value":"B"},{"text":"to provide each appliance the same voltage as the power source","value":"C"},{"text":"to provide each appliance the same current as the power source","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":166304,"question":" What happens to the intensity of the brightness of the lamps connected in series as more and more lamps are added?","choices":[{"text":"Increases","value":"A"},{"text":"Decreases","value":"B"},{"text":"Remains the same","value":"C"},{"text":"Can not be predicted","value":"D"},{"value":"E"}],"correctAnswer":2}]