[{"id":235519,"question":"The potential of the neutral wire is.","choices":[{"text":"Zero","value":"A"},{"text":"+220 volts","value":"B"},{"text":"220 volts","value":"C"},{"text":"Changing","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":235518,"question":"The instrument that measures current is called.","choices":[{"text":"Voltmeter","value":"A"},{"text":"Circuit breaker","value":"B"},{"text":"Ammeter","value":"C"},{"text":"Switch","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39114,"question":"A device which does not allow current to pass through it overt a certain limit:","choices":[{"text":"Switch ","value":"A"},{"text":"circuit breaker ","value":"B"},{"text":"Resistor ","value":"C"},{"text":"Fuse ","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":39113,"question":"Multi - meter is an instrument which can be used to measure:","choices":[{"text":"Resistance ","value":"A"},{"text":"Current ","value":"B"},{"text":"Potential difference ","value":"C"},{"text":"all of the above ","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":39112,"question":"Which circuits carry currents to the lights heaters and other appliances:","choices":[{"text":"parallel circuits ","value":"A"},{"text":"series circuits ","value":"B"},{"text":"common circuits  ","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":39111,"question":"A,C electric supply at homes:","choices":[{"text":"240 volt ","value":"A"},{"text":"50 volt ","value":"B"},{"text":"220 volt ","value":"C"},{"text":"1000 volt ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39110,"question":"The working principle of transformer:","choices":[{"text":"Electromagnetic conduction ","value":"A"},{"text":"Electrostatic induction ","value":"B"},{"text":"Electric charge ","value":"C"},{"text":"Neutralization ","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":39109,"question":"A device that decreases or increases the A.C voltage:","choices":[{"text":"Transformer ","value":"A"},{"text":"Ammeter ","value":"B"},{"text":"Voltmeter ","value":"C"},{"text":"Fuse ","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":39108,"question":"The SI unit of capacitance is:","choices":[{"text":"Farad","value":"A"},{"text":"Ampere","value":"B"},{"text":"Ohm ","value":"C"},{"text":"Newton ","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":39107,"question":"The device use to store electric current:","choices":[{"text":"Fuse ","value":"A"},{"text":"Switch ","value":"B"},{"text":"Resistor ","value":"C"},{"text":"Capacitor ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39106,"question":"The conductors having larges resistance are called:","choices":[{"text":"Fuses ","value":"A"},{"text":"Switches ","value":"B"},{"text":"Resistors ","value":"C"},{"text":"Capacitors ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39105,"question":"The SI unit of resistance: ","choices":[{"text":"Volt ","value":"A"},{"text":"Ampere ","value":"B"},{"text":"Ohm (Ω)","value":"C"},{"text":"Farad","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39104,"question":"According to ohm's law , current and potential difference are:","choices":[{"text":"Inversely proportional ","value":"A"},{"text":"Directly proportional","value":"B"},{"text":"Equal","value":"C"},{"text":"Non of the above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":39103,"question":"The potential difference between tow paints in a circuit is measured by:","choices":[{"text":"Galvanometer ","value":"A"},{"text":"Ammeter ","value":"B"},{"text":"Voltmeter ","value":"C"},{"text":"Multi - meter ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39102,"question":"Which of the following is an neutral particle?","choices":[{"text":"Electron ","value":"A"},{"text":"Proton ","value":"B"},{"text":"Neutron ","value":"C"},{"text":"Alpha particle","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":39101,"question":"The energy produced by the breakdown of chemical bond between atoms:","choices":[{"text":"Light energy  ","value":"A"},{"text":"chemical energy ","value":"B"},{"text":"electrical energy ","value":"C"},{"text":"kinetic energy ","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":39100,"question":"The Si unit of current is:","choices":[{"text":"Ohm ","value":"A"},{"text":"Ampere ","value":"B"},{"text":"Kilowatt ","value":"C"},{"text":"Coulomb ","value":"D"},{"value":"E"}],"correctAnswer":2}]