November 2013 1. a) Write brief notes on the Hall effect. Show on a diagram the polarity of the Hall Voltage‚ together with a given current and magnetic field direction‚ assuming the charge carriers to be conduction electrons. [5] b) Define electric dipole and the electric dipole moment. Write down an expression‚ in vector form‚ and show graphically the electric field intensity at point P on the normal to the axis of the dipole. [5] 2. a) What is the potential difference
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Alcohol | | | Tap Water | | | Distilled water and sodium chloride | | | Distilled water and sucrose | | | Alcohol and sodium chloride | | | Alcohol and sucrose | | | Questions: 2). Did any of the liquids conduct an electric current? If so‚ which one(s)‚ and please explain why or why not thoroughly? The tap water contains ions and minerals that conduct electricity due to the charges within the water. Distilled water is a liquid covalent compound where there are no charges
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representation of the circuit termed a schematic. You are already familiar‚ after experiment the Basic Electric Circuits Lab‚ with the representation of resistors and batteries; the only new symbol we introduce is that of the node‚ shown in Figure 4.1 below. It is simply a point where the current divides or joins. We are now ready to analyze circuits. To analyze a circuit we do two things: 1. find the current in each component‚ and 2. find the potential difference across each component. The rules of circuit
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system: Y/’ reducing the pressure start-up; Y/’ time transfer relay should be adjusted as 50S or so. 3) Start-up of double electrical machine: Stand-alone start-up and Two engine start-up. You can choose the start-up according to the power of electric network. 3. Start-up with
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Permissions Department‚ Pearson Education‚ Inc.‚ Upper Saddle River‚ NJ 07458. Chapter 2 Solutions Section 2.1 Introduction 2.1 Current source 2.2 Voltage source 2.3 Resistor 2.4 Capacitor 2.5 Inductor Section 2.2 Charge and Current 2.6 b) The current direction is designated as the direction of the movement of positive charges. 2.7 The relationship of charge and current is t q(t ) = ! i(t ) + q(t 0 ) dt t0 so t q(t ) = ! 2 sin ( " t ) + q(t0 ) 10 dt t0 & ’2 # q(t )= $ cos( ( t )!
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his wrist. He could had easily been killed from electric shock. Without these people‚ the discovery of light bulb would have been impossible. http://www.gavinelectrical.com/content/history.htm 4. What is electricity how does electricity flow? Electricity is a flow of tiny particles called electrons which can travel through wires. “Electron current” the name of this flow. Just like water‚ which can only flow down a hill‚ an electric current can only flow if there’s something pushing the electron
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modeling of prototype heaters to include the temperature loss to the surroundings is developed. Experiments were conducted to evaluate effects of airflow rates and electrical current and measure the change of air inlet and outlet temperatures. The temperature rise in the airflow is directly proportional to electric current‚ and inversely proportional to the weight density of the foam. The temperature appears directly proportional to airflow rate in low density foams‚ while it is inversely proportional
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PARITY GENERATOR Vinti Thakkar Swetha Jain Riddhi Vira TE : B-3 TE : B-3 TE : B-3 Roll no : 0812103 Roll no : 0812106 Roll no : 0812114 Email : vinti.thakkar Email : shweta.mjain Email : riddhi1312 @gmail.com 2012@gmail.com
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lives. As a matter of fact‚ it can even kill you. The most vital part of electricity is called electric energy. This is what we commonly think of when we hear the word electricity. “Electricity” reminds us of anything that we plug into an electrical outlet in order to make it work‚ such as lights‚ refrigerators‚ video games‚ microwaves‚ and computers. Scientists discovered ways to produce electric energy in large amounts in order to make heat‚ light and motion. These discoveries have improved
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resides? Do electrons tend to go to region of low or high potential? What is the 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
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