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