Which of the following statements is not true for an electric charge? a. When an atom loses an electron, it becomes positively charged b. Electric charge is quantized c. Electric charge is not conserved d. For a positively charged object, the electric field lines are directed outwards 13. The gravitational potential energy of a 500kg elevator at the top of a building, 450m above the ground level is a. 2.205kJ b. 2.205MJ c. 0.225MJ d. 2.205GJ

Q: Q5 -If the total energy of the electron in an orbit is positive, this means:

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Q: ed by a d

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Q: 8. In the photoelectric effect, the work function is a) the amount of energy required to release an…

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Q: 1. An electron and a positron are moving side by side in the x direction at 0.500c when they…

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Q: 3. In a TV tube an electric potential difference accelerates electrons from a rest position towards…

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Q: 5. An electron in the first energy level of a hydrogen atom is 5.3x10-11 m from the nucleus. What is…

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Q: 1. An evacuated tube uses an accelerating voltage of 45 kV to accelerate electrons to hit a copper…

A: accelerating voltage = 45 kV = 45000 V particle = electron

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Q: The retina of a human eye can detect light when radiant energy incident on it is at least 4.00×10−17…

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Q: 7. An electron is accelerated through a potential difference of 12.1 V. n = 5 -0.54 eV 0.8 eV n = 3…

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.