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