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