11/03/2020Electricity (Study by Topics Junior Class) 0Comments by Gate Academy Welcome to your Electricity (Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. A metal strand used to connect electrical devices in a circuit is a/an _________ Wire Battery Filament Switch2. In the case of insulators, as the temperature decreases, resistivity Increases Becomes zero Decreases Remains constant3. When two 2Ω resistances are in parallel, the effective resistance is 1 Ω 2 Ω 4 Ω 0.5 Ω4. An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be: 2.9 A 0.92 A 92 A 9.2 A5. What is static electricity An electric charge, tends to make your feet swell An electric charge, that comes and go's very quickly An electric charge, tends to stay on the surface of an object, rather than leaving quickly The motion of a laughing hyena6. Which device is used to measure voltage? Circuit beaker Ammeter Voltmeter Resistor7. A material through which electric current CANNOT pass easily is a/an _________ Tester Insulator Receptor Conductor8. The material through which electric charge can flow easily is Germanium Quartz Copper Mica9. The flow of electric charge through something is a/an ______ Wire Circuit tester Electric current Battery10. A fine wire that becomes hot and produces light when an electric current passes through it is called a _________ Filament Circuit Wire Nichrome wire11. What is the function of a fuse? A protective device to slow down the current Another name for a switch A wire with high resistance to prevent current from passing through A protective device for breaking an electric circuit.12. If in the given arrangement, the three resistors are replaced by a single resistor; then its resistance will be: 4Ω 6Ω 18Ω 9Ω13. A certain steam iron carries a current of 6.4 A when connected to a 120 V source. What is the resistance of the steam iron? 768 Ω 18.75 Ω 0.05 Ω 1.875 Ω14. Which of the following not a conductor of electricity? Plastic Iron Graphite Copper15. A/An _____________________ is used to turn the electricity in a current on or off. Conductor Insulator Switch Battery16. The resistance of a hotplate is 48 Ω. How much current does the plate carry when connected to a 120-V source? 0.4 A 120 A 2.5 A 5760 A17. Electric current in a/an _____________________ circuit travels in ONE path. Series Wire Parallel Electric18. What is electricity None of the above A form of energy, created by Steve Jobs Form of energy, resulting from the interaction of charged particles, such as protons or electrons A form of energy resulting in the motion of wind turbines19. A toaster operating at 240V has a resistance of 120Ω. The power is 400 W 2 W 240 W 480 W20. A circuit must have which of the following? Energy source, wire, switch Battery, wire, switch Energy source, battery, load Energy source, wire, load21 out of 20Time is Up!