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