ETEA RECONDUCTED PAPER 2023 ETEA 2023 ( PART 16 ) 1. Ohm’s law states that the current is directly proportional to _____ and inversely proportional to _____ . Resistance. current Voltage, current Voltage, resistance Resistance, voltage 2. The ability to produce an electromotive force by changing the magnetic field inside a coil is used to generate Mechanical energy Magnetic energy only Electromagnetic force Electricity 3. The absolute potential energy of a spaceship on the surface of the earth is GmMe/Re -Gme/Re GmMe/2Re GmMe/Re^2 4. The bird perching on a high-power line does not get electric shock This is because Because the air medium between the live wire and the earth contains large number of electrons The whole body of the bird sitting on the live wire Is a zero potential and hence no current flows through the body Because the air medium between the live wire and the earth contains large number of charge particles The whole body of the bird sitting on the live wire is at the same potential and hence no current flows through the body 5. The capacitance of capacitor depends upon All of these Distance between the palates Area of the plates Dielectric between them 6. The Compton’s effect is the phenomenon that describes The scattering of the light by prism The creation of interference patterns in a double-slit experiment The change in the wavelength of x-rays when the interact with matter The bending of light when It passes from one medium to another 7. The current produced by a generator is called Variable current Pulsating current Alternating current Direct current 8. The device used to adjust voltage levels In an electrical circuit is called Circuit breaker Capacitor Voltage regulator Transformer 9. The distance covered by sound wave per unit time is called Amplitude of sound wave Speed of sound wave Wavelength of sound wave Velocity of sound wave 10. The domestic electricity supply has a frequency of 300hz 100hz 150Hz 50Hz Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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