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