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