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 ___________. chemical effect of current heating effect of current magnetic effect of current all of these 2 / 40 If you have a 12 Volt battery placed across a 6 Ohm resistor, what will the current be? 0.5 Amps 18 Amps 2 Amps 72 Amps 3 / 40 Conventionally the direction of the current is taken as _______. the direction of flow of positive charge the direction of flow of atoms the direction of flow of molecules the direction of flow of negative charge 4 / 40 In electrical wire copper is used for electrical conduction mainly because ______. it has a high melting point it is cheaper it has low electrical resistaivity it is very durable 5 / 40 What is the standard unit of measurement for electrical charge? Ohm Volt Coulomb Ampere 6 / 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 electrolysis thermionic conduction 7 / 40 The unit of energy is ______. Watt per hour Kilowatt Joules Kilowatt per hour 8 / 40 Which is an example of the build-up of static electricity? Generator Lightning Electromagnets Friction 9 / 40 A closed path that electric current follows is? Voltage Difference Resistance Electric Circuits Batteries 10 / 40 Find the type of current if it's constantly changes direction? AC Current None DC Current 11 / 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 12 / 40 Cathode is _______. a positively charged ion formed in the electrolyte positively charged electrode a negatively charged ion formed in the electrolyte negatively charged electrode 13 / 40 When two bodies are charged together by rubbing each other then both of them acquire ___________. Unequal charges Equal and opposite charges Unequal and opposite charges None of these 14 / 40 Electric current is ____. flow of charge per unit time all of the these resistance per unit time work done per unit time 15 / 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 16 / 40 If an atom loses an electron, it becomes ________ charged. positively Neutral negatively 17 / 40 The current in a circuit equals the voltage difference divided by the resistance. Voltage law Current law Newton's law Ohm's law 18 / 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 19 / 40 An electrolyte is ________. none of these a light electric cell a liquid that conducts electricity a metal 20 / 40 A 1.5V battery is connected across a metal wire of resistance 3Ω. Calculate the current in the wire. 1.5A 0.5A 3A 4.5A 21 / 40 When a glass rod is rubbed with silk, it acquires a positive charge because ___________. Electrons are removed from it Protons are added to it Electrons are added to it Protons are removed from it 22 / 40 A closed path through which electrons can flow is _________. voltage current circus circuit 23 / 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 24 / 40 Bakelite is a/an _______. None of these Semi-conductor Insulator Conductor 25 / 40 According to Ohm's Law, current equals the voltage divided by the _________. Inductance Power Capacitance Resistance 26 / 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 Either open or closed circuit closed or complete circuit None of these 27 / 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 28 / 40 Silicon is a ________. Conductor Insulator Super-conductor Semi-conductor 29 / 40 In an electrolytic cell, the electrode that is connected to the positive terminal of the battery is called as ________. anion anode cation cathode 30 / 40 Materials which allow larger current to flow through them are called as _____. Insulator Alloys Semi-conductor Conductor 31 / 40 Find the type of current if it's only flows in one direction? AC Current None DC Current 32 / 40 In the direction of electric field, the electric potential _______. decreases becomes zero increases remains uncharged 33 / 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 34 / 40 In a metallic conductor, electric current is thought to be due to movement of ______. ions electrons amperes protons 35 / 40 What are all substances made from? Neutrons Electrons Protons Atoms 36 / 40 The SI unit of current is _______. Coulomb Ohm Ampere Volt 37 / 40 Good conductors have many loosely bound _________. Atoms Molecules Protons Electrons 38 / 40 Potential difference is measured using______. voltmeter wattmeter electroscope ammeter 39 / 40 Potential difference is measured in _____. amperes volts columbs ohms 40 / 40 Chemical combination involves _________. Combination of only same type of compounds Combination of two atoms Combination of any two or more elements or compounds Combination of only same type of elements Please enter your name below. Name Your score is LinkedIn Facebook VKontakte 0% Restart quiz Exit Send feedback ← Science Quiz Index Series & Parallel Circuits →