Electric Current Quiz The quiz is designed for the various curriculum students such as GCSE, IGCSE, ISC, IB, ICSE, CBSE and National Curriculum England. Start the quiz and learn science with fun! Quiz Level: Grade 8Total Questions: 20 1 / 40 When two bodies are charged together by rubbing each other then both of them acquire ___________. Unequal and opposite charges Equal and opposite charges None of these Unequal charges 2 / 40 An electrolyte is ________. a light electric cell a metal none of these a liquid that conducts electricity 3 / 40 Silicon is a ________. Insulator Conductor Semi-conductor Super-conductor 4 / 40 Find the type of current if it's constantly changes direction? None AC Current DC Current 5 / 40 In an electrolytic cell, the electrode that is connected to the positive terminal of the battery is called as ________. anion anode cation cathode 6 / 40 According to Ohm's Law, current equals the voltage divided by the _________. Power Inductance Capacitance Resistance 7 / 40 Electric current is ____. resistance per unit time all of the these flow of charge per unit time work done per unit time 8 / 40 Potential difference is measured using______. ammeter wattmeter electroscope voltmeter 9 / 40 The SI unit of current is _______. Ampere Volt Coulomb Ohm 10 / 40 If the current is 2 Amps and the voltage is 8 Volts, what is the power? 10 Watts 16 Watts 0.25 Watts 4 Watts 11 / 40 Potential difference is measured in _____. volts columbs ohms amperes 12 / 40 Conventionally the direction of the current is taken as _______. the direction of flow of molecules the direction of flow of atoms the direction of flow of negative charge the direction of flow of positive charge 13 / 40 When the path of current, starting from one terminal of cell, ends at the other terminal of the cell is broken at some point, then such a circuit is called as _______. closed or complete circuit None of these Either open or closed circuit open or incomplete circuit 14 / 40 If you place a 50 Volt power source across a 10 Ohm resistor, what will the current be? 0.2 Amps 500 Amps 5 Amps 0.5 Amps 15 / 40 If you have a 12 Volt battery placed across a 6 Ohm resistor, what will the current be? 0.5 Amps 72 Amps 18 Amps 2 Amps 16 / 40 If an atom loses an electron, it becomes ________ charged. Neutral negatively positively 17 / 40 Find the type of current if it's only flows in one direction? DC Current None AC Current 18 / 40 The current in a circuit equals the voltage difference divided by the resistance. Current law Ohm's law Newton's law Voltage law 19 / 40 The process by which a chemical change takes place in a substance when electric current is passed through it is called as _________. electrodes electrolysis thermionic conduction electrolysis 20 / 40 Chemical combination involves _________. Combination of two atoms Combination of only same type of elements Combination of only same type of compounds Combination of any two or more elements or compounds 21 / 40 A 1.5V battery is connected across a metal wire of resistance 3Ω. Calculate the current in the wire. 0.5A 3A 1.5A 4.5A 22 / 40 Cathode is _______. a positively charged ion formed in the electrolyte negatively charged electrode positively charged electrode a negatively charged ion formed in the electrolyte 23 / 40 Bakelite is a/an _______. Conductor Semi-conductor None of these Insulator 24 / 40 Materials which allow larger current to flow through them are called as _____. Semi-conductor Alloys Insulator Conductor 25 / 40 What are all substances made from? Atoms Protons Electrons Neutrons 26 / 40 The existence of a negative charge on a body implies that it has _________. lost some of its protons acquired some protons from outside lost some of its electrons acquired some electrons from outside 27 / 40 In which type of change, we observe alteration only in specific property of matter but not composition? None of these Both physical and chemical change Chemical change Physical change 28 / 40 When a glass rod is rubbed with silk, it acquires a positive charge because ___________. Protons are added to it Electrons are added to it Electrons are removed from it Protons are removed from it 29 / 40 The unit of energy is ______. Kilowatt Kilowatt per hour Watt per hour Joules 30 / 40 Which of the following is not correct regarding electroplating. It is use to provide coating of an electrode It is use to produce electricity It is use to alter the appearance of an objects In this process electricity is used 31 / 40 In the direction of electric field, the electric potential _______. increases remains uncharged becomes zero decreases 32 / 40 Which is an example of the build-up of static electricity? Friction Electromagnets Lightning Generator 33 / 40 A closed path that electric current follows is? Batteries Resistance Electric Circuits Voltage Difference 34 / 40 A closed path through which electrons can flow is _________. circus current circuit voltage 35 / 40 When the ends of metal wire are not connected to a battery the _______. protons move in random direction electrons move from negative electrode to positive electrode electrons move in random direction electrons move from positive electrode to negative electrode 36 / 40 What is the standard unit of measurement for electrical charge? Coulomb Ohm Ampere Volt 37 / 40 In electrical wire copper is used for electrical conduction mainly because ______. it is very durable it has low electrical resistaivity it is cheaper it has a high melting point 38 / 40 Electric bell works on the principle of ___________. heating effect of current chemical effect of current magnetic effect of current all of these 39 / 40 In a metallic conductor, electric current is thought to be due to movement of ______. protons ions electrons amperes 40 / 40 Good conductors have many loosely bound _________. Molecules Atoms Protons Electrons Please enter your name below. Name Your score is LinkedIn Facebook VKontakte 0% Restart quiz Exit Send feedback ← Science Quiz Index Series & Parallel Circuits →