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