Charge problems 1. Complete the following sentences using words from the list below. equal negative opposite positive zero a) A proton has ………positive…….. charge. b) A neutron has ……zero……….. charge. c) An electron has ………negative…….. charge. d) A proton and an electron have ……opposite……….. and ………equal…….. charge. 2. Complete the following sentences using words from the list below. electron(s) ion(s) neutron(s) nucleus (nuclei)
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of another atom. Ionic bond involves electron transfer across two atoms. The atom which donates the electron is called cation which is a positive ion whereas the atom which gains the electron is called anion which is a negative ion. The opposite charge of cation and anion attract one another due to the electrostatic force which is formed between them. The formation of a ionic bond involves a metal and a non-metal. Thus it forms the ionic bond. (A) EXAMPLE OF IONIC BOND (1) Sodium Chloride Sodium
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strip is rubbed by tissue‚ it will charge the vinyl strip negatively and acetate strip positively caused by the transfer of electron between the strip and tissue. If molecules have non zero bond dipole‚ because polar molecule must have a non-zero molecular dipole where electron spend more of their time closer to one atomic nucleus than the other and make one end partially positive or negative than the other end. Different charge will attract the opposite charge which will bend the stream of liquid
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spectrometer starts with a man named Sir Joseph John Thompson. Thompson studied conductivity of gases‚ which led him to discover the electron in 1897. Soon after Thompson constructed the first mass spectrometer‚ that’s purpose was to determine the mass to charge ratio of ions. In this instrument‚ ions in discharge tubes were passed into magnetic and electric fields‚ which caused the ions to move through paths. Then‚ the rays were revealed on a photographic plate or fluorescent screen. After Thompson‚ a
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net charge on the charged capacitor? A Gaussian surface encloses an electric dipole within it. What is the total flux across sphere? 5. Find the dimension of 1/2εoE2. 6. In a certain l m3 of space‚ electric potential is found to be V Volt throughout. What is the electric field in this Region? 7. If Coulomb law involves 1/r3 instead of 1/r2 dependence‚ would Gauss law be still true? 8. An electrostatic field line can’t be discontinuous‚ why? 9. The given graph shows that the variation of charge versus
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provided by the class What would you measure? I will measure the static electricity with a neutrally charged balloon What results do you expect? I expect that the balloons charges and sticks to the wall. What is the result are different? That would mean that there is a different way to charge the balloons than negative charge as using your hair. EXPERIMENT Bring together the balloons but not touching each other. Rub a balloon in sweater. Rub several times the balloon and the sweater so
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action of points‚ the negative charges in air move towards the needles and positive charges are repelled on towards the belt. These positive charges stick to the belt‚ moves up and reaches near the comb E. As a result of electrostatic induction‚ the comb acquires negative charge and the sphere acquires positive charge. The acquired positive charge is distributed on the outer surface of the sphere. The high electric field at the comb E ionizes the air. Hence‚ negative charges are repelled to the belt‚
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force between two spherically symmetric charged objects is directly proportional to the product of the charges‚ and inversely proportional to the square of the distance between the centers of the two charges. In mathematical vector notation Coulomb’s Law is expressed as where Fr is the force on particle 1 due to particle 2 in Newtons‚ q is the charge on 12 1 particle 1 in Coulombs‚ q2 is the charge on particle 2 in Coulombs‚ rˆ12 is a unit vector originating at the center of particle 1 and pointing
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electric charges at rest was studied by Charles Coulomb. He formulated a law‚ known as "COULOMB’S LAW". STATEMENT According to Coulomb’s law: The electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of charges. The electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of distance between them. MATHEMATICAL REPRESENTATION OF COULOMB’S LAW Consider two point charges q1
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