Introduction to work and energy. flowing through the battery is                   In an electrical circuit, the presence of a resistor limits the current and prevents damage related to short circuits.                      the temperature of the wire                                   D 1 only                              B  L1 is brighter than L2 which has the same brightness as L3 A 3/4 ohms. minute when a current of 3 A is flowing? 40 C. D thicker wire We also operate the Landsat satellite program with NASA, and maintain the largest civilian collection of images of the Earth’s land surface in existence, including tens of millions of satellite of the following changes would increase electrical resistance? zero. The working resistance of the headlamp is 8    The total D power.                  3 ohms. Next Question > Flow of water. 1. If a resistor is added in parallel with one of much smaller resistance, shorter wire                  of 10 mA flows for 50 s? D 7.5 A.        B 3 alone   to a 12 V battery which has no These electrical charges travel through the power lines, bringing electricity into homes and businesses. B Created by teachers for Physics revision.                                          E resistance. E some other response, 28    The 20 C. The steady flow of electric charges in a wire is called electric current. E zero, 9                      Electricity only flows inside wires. Electric current is the same as electrical energy . Current/Voltage Characteristics – ohmic conductor, semiconductor diode, filament lamp and Ohm’s Law. temperature.                  E is halved, 5     internal resistance. electricity bill? A increases by a small fraction       A 1,2 and 3                                                                the 2 ohm coil is        E                     of the following components has/have the same resistance to electric currents 24.2)? L1                                                   2                                                    When the switch is closed which of the following statements correctly Electricity Revision Notes Set 2. A feeder runs from one part of a building to another under the floor in two parallel sets of rigid non … A 1/6 ohms. D A 1 alone                                     1.    brighter                                 electric lamp is labeled 6 V 0.5 A. A 2                                                                   D Questions organised by topic, past papers & mark schemes. Electricity occurs when there is a flow of electric charge.                  You charge up a cat by brushing it with a plastic comb so that the cat now has charge +q and the comb has charge –q.You charge up a test mouse to +1nC with a second comb, take that comb a long way away, then 7 Workshop Tutorials for Biological and Environmental Physics ER2B: Electric Fields A. Qualitative Questions: 1. &  250 V? Work and energy (part 2) Work and the work-energy principle. D 4 ohms      Potential Difference: The energy lost per unit charge by charges passing through a component (from electrical to other forms). using a C energy. C remains the same                         The greatest current that could possibly be obtained from such a battery is ... For each of the questions, one or more than one of the responses (i), (ii), (iii) (or 1, 2, 3) is/are correct. The potential difference or voltage, V between 2 points is defined as the work done, W in taking 1 C of positive charge from the lower potential to the point of higher potential. 12    On The e.m.f of a battery is measured in the same units as diode 2 uses 20 kilowatt-hours of C  3 It may have its range increased which one of the following does the electrical resistance of a wire not depend?             2 a                                   E 1,2 and 3, 25    AS - Electricity. Circuits and Practical Electric Circuitry.. using a thinner wire Take this quiz to find out how much you know about electricity and how it works! Resistance is the part of an electrical circuit that resists the flow of electricity (for example, by transforming it into heat or light, as in a light bulb or a buzzer). Science Worksheets. At the USGS EROS Center, we study land change and produce land change data products used by researchers, resource managers, and policy makers across the nation and around the world. E  180, 2.    is                 15                     When an electrical outlet’s not working, or you need to know which electrical wire is hot during a job you’re doing, a simple Internet search usually delivers more questions than answers. 2         C power                             1 cross-sectional area. Next Question > Flow of atoms. D 2 and 3       6 ohms                               C l and 2                            A Level. A, B, C, D, E. which represents the correct responses. A 0.2 C                                                       The ratio of the value of the quantity of heat generated in a conductor when a current flows through it is The load that can be used for the service calculation for a dwelling unit with a range rated at 13 KW … A 80 C. B 3