Revision: Current Electricity 15 Current Electricity - Revision Quiz Test your understanding of Current Electricity here: 1 / 5 1) What is an electromotive force? It is the work done by a voltage source to drive a unit charge through a component. It is the product of current through a component and the resistance of the component. It is the work done by an appliance in driving a unit charge around a circuit. It is the work done by a voltage source in driving a unit charge around a circuit. 2 / 5 2) Which sentence states Ohm's Law? The potential difference across the ends of a conductor is inversely proportional to the current flowing through it. The electromotive force across the ends of a conductor is directly proportional to the current flowing through it. The electromotive force across the ends of a conductor is inversely proportional to the current flowing through it. The potential difference across the ends of a conductor is directly proportional to the current flowing through it. 3 / 5 3) Two lamps of resistance 6.0Ω each are connected to a battery as shown below. Which of the following statements is/are correct? (i) L1 will light up but L2 will not light up. (ii) The potential difference across L1 is equal to that of L2. (iii) The current passing through L1 is equal to that passing through L2. (iii) only (i) and (iii) only (i) and (ii) only (i) only 4 / 5 4) Identical light bulbs A, B and C are connected in series to a battery. Which bulb will be the brightest? They will all be equally bright. Bulb C will be the brightest. Bulb A will be the brightest. Bulb B will be the brightest. 5 / 5 5) A conducting body that is insulated from earth has a net positive charge. It is completely discharged when it is connected to earth by a wire. In which direction do electrons flow when it is being discharged? from earth to the conducting body from conducting body to earth Your score is Restart quiz