Quiz On Electric current and its effects Test 4 (physics) Welcome to your Quiz On Electric current and its effects Test 4 (physics) Name Email 1.In the symbol for the electric cell, the thicker, shorter line represents the: (a) positive terminal (b) ring terminal (c) negative terminal (d) neutral term None 2.What is the total charge of an electric dipole? (a) −10 (b) +1 (c) 0 (d) 10 None 3.Who among the following introduced the concept of electric field for the first time? (a) Blaise Pascal (b) Michael Faraday (c) Charles Augustin de Coulomb (d) Joseph Henry None 4.Which of the following is not a good conductor of electricity? (a) Graphite (b) Gold (c) Diamond (d) Soil None 5. Which of the following statements is correct? (a) Magnetic flux is a vector quantity. (b) Two magnetic field lines may intersect. (c) The net magnetic flux through any closed surface is zero. (d) Earth's magnetic poles coincide with the geographic poles. Sol. None 6. Which of the following is NOT a good conductor of electricity? (a) Silver (b) Copper (c) Bromine (d) Graphite None 7.Electrical conductance through metals is called electronic conductance and it ______. (a) decreases with increase in temperature (b) increases with increase in temperature (c) decreases with decrease in temperature (d) None of the above None 8. Electrical conductance through metals is called electronic conductance and it ______. (a) decreases with increase in temperature (b) increases with increase in temperature (c) decreases with decrease in temperature (d) does not depend on temperature None 9. Among various electrical safety devices, one based on the heating effect of electric current is called a: (a) Fuse (b) Surge protector (c) Protective relay (d) Capacitor None 10.The rating for a fuse used in a household electric circuit is provided on the basis of: (a) voltage (b) current (c) power (d) resistance None 11.Which law of physics states that the force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled ? (a) Coulomb's law (b) Stefan's law (c) Pascal's law (d) Hooke's law None 12. Which of the following instruments can detect the presence of a current in a circuit ? (a) Galvanometer (b) Sphygmomanometer (c) Barometre (d) Magnetometer None 13. Which of the following is NOT a primary force which influences ocean currents ? (a) Magnetic fields of the earth (b) Heating by the sun (c) Gravity (d) Coriolis force None 14. Magnetic Field inside the solenoid is ______. (a) increases from one end to another (b) zero at the middle (c) varies from point to point (d) uniform None 15. Ohm’s Law states that: (a) Electric current = Voltage/ Resistance (b) Power = Voltage + Current (c) Power= Voltage Current × (d) Electric current = Resistance/ Volt None 16.Which of the following are the highest-frequency electromagnetic waves? (a) Gamma Rays (b) Radio Waves (c) Ultraviolet Rays (d) Microwaves None 17.Who founded and named the science of electromagnetism? (a) Michael Faraday (b) James Clerk (c) Hans Christian Oersted (d) Andre Marie Ampere None Time's up
