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