28/03/2020Current Electricity and Electrical Quantities(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Current Electricity and Electrical Quantities(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. The current in a circuit equals the voltage difference divided by the resistance.Ohms LawLaw of complianceConductivity LawLaw of resistance2. If R1 and R2 are the filament resistances of 200 watt and a 100 watt bulb respectively, both designed to run at the same voltage, thenR2 is four times R1R1 is two times 3R2R1 is four times R2R2 is two times R13. An oscilloscope is a device that is used to generate different waveforms.FalseTrue4. There is no met movement of electrons in one direction.TrueFalse5. Which of these materials is a good conductor?GoldPlasticWool6. What ultimately happens to the cow in this situation? During a thunderstorm, if lightning hits the ground near a cow, then the current starts to spread out in the groud. Since the ground is wet, it is easier to spread horizontally, and also, the ground is somewhat positively charged. When the current starts to spread while a cow is eating grass, the current flows from the cow's mouth (A), goes through its leg (B) and goes back to the ground. The current will flow until the voltage becomes zero. Because cow's hind leg (D) has lower potential energy than its front leg (C), the current can flow through the cow. The cow becomes a part of the electric circuit.The cow gets a big electric shock and probably diesNothing happens to the cow.All the current builds up in the cow's bell which will shock the rancher later.The cow feels a slight tingle but continues eating.7. Given three resistors, how many different combinations of these three resistances can be madeFourFiveThreeSix8. An electrical device that will only let the electric current flow in one direction is calledA DiodeA BatteryAn LDRA Bulb9. A _____________ was the source of electricity in the labs that we did.BatteryLight bulbWire10. Six wet cells made up of lead and lead dioxide plates in a sulfuric acid solution.Terminal batteriesResistanceWet cell batteriesLead-Acid batteries11. The resistance of a hotplate is 48 Ω. How much current does the plate carry when connected to a 120-V source?5760 A120 A0.4 A2.5 A12. Part of the circuit through the bulb is a thin wire called a ______.ProtonFilamentElectronBattery13. Where in an atom are electrons found?Near the middleOn the top of the nucleus but under the protonsIn the nucleus (centre)Whizzing around in the space around the nucleus14. What is static electricity caused by?A balance of positive and negative chargesA balance of powerAn imbalance of positive and negative charges15. A way to measure the resistance of objects and materialsVoltage differenceOhms LawSimple circuitElectric current16. What is the unit for energy?JoulesVoltsAmperesOhms17. Voltage difference is measured in _____.CentimetersAmpsVoltsElectrodes18. In a parallel circuit the component with the largest resistance gets:-The least currentThe most currentAll components get the same currentThe most potential difference19. A __________ is a closed path or loop around which an electric current flows.CircuitCurrent electricityElectronBattery20. According to Faraday's law of electrolysis, when a current is passed, the mass of ions deposited at the cathode is independent ofTimeChargeCurrentResistance21. In which direction does electric current flow around a circuit. Negative to PositivePositive to NegativeClockwiseAnti-clockwise22. Which of the following MUST a circuit have?A battery and a lampWires and a lampComponents and wiresWires and a power source and another component23. A toaster operating at 240V has a resistance of 120Ω. The power is480 W240 W2 W400 W24. A ____ ____ is related to the force that causes electric charges to flow.Current flowElectric currentsVoltage differenceDry cell batteries25. A closed path that electric current follows is?Electric CircuitsBatteriesVoltage DifferenceResistance26 out of 25Time is Up!
