High voltage transmission line Step-down transformer Step-down (substation) transformer Power plant Step-up transformer Home 12,000 V 240,000 V 7200 V 240 V FIGURE 21-25 The transmission of electric power from power plants to homes makes use of transformers at various stages.

Q: 1) If the electrical power lines in a certain neighborhood deliver electricity at 72,000 volts,…

A: Primary voltage Vp = 72000 volts Secondary voltage Vs = 120 volts

Q: 2) A standard motional emf setup in the xy consists of a constant, uniform magnetic field which…

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Q: 1) A circular loop of radius 4.7 cm is positioned in a uniform magnetic field of magnitude 5680 G so…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: (23%) Problem 4: Consider a transformer, used to recharge rechargeable flashlight batteries, that…

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Q: A square conducting loop is in a region of uniform, constant magnetic field. Can the loop be rotated…

A: Can the loop be rotated about an axis along one side and no emf be induced in the loop?

Q: A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage…

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Q: is Equation of an alternating ent t geven as e = 50 sin 314+· Find Break value of ent tits…

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Q: 16) A (00 turn of 0.(00 m². The coil encloses cir cumtere ntial loil an are a has a resistance of 10…

A: Calculate the total magnetic field. Calculate the magnetic flux.

Q: (p) It is necessary to find the value of R from a switched circuit. The function becomes R f(R)=…

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Q: A transmission line that has a resistance per unit length of 4.30 x 104 n /m is to be used to…

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Q: ideal transformer,

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Q: )An tdial section has an flows through the 2.0v in the Sole the current fo

A: Here, we have to calculate the rate of change of current.

Q: A 6 pole generator with wave wound armature has 50 slots each having 28 conductors. The flux per…

A: Given, Pole,P=6

Q: In electromagnetic induction, how does no. of coils affect the current produced?

A: The phenomenon of Electromagnetic induction is discovered by Michael Faraday in 1831.  The Law of…

Q: A long radius R the number solenoid has and of turns per unit of leng th is n. An increasing current…

A: Magnetic field inside a solenoid is given by B=u⁰nI

Q: In a certain region of space, a uniform magnetic field of flux density 1.5 T is directed…

A: When a charged particle moves in a magnetic field at some angle, then there is a force exerted by…

Q: A square loop circuit (with a 30.0 V battery, resistance of 6.00 ohms and side length of 2.00 m) is…

A: Force on a current carrying conductor in a magnetic field is given as  F = I (LxB) Where L is length…

Q: Explain: A changing magnetic field near a conductor induces a current in the conductor

A: The magnetic field (B) around a magnet or a conductor is the region in which any other conductor or…

Q: (L11) To store 9.19E-3 J energy in a 7.09E-3 H inductor, what charging current should be applied to…

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Q: half O A tectangular conducting loop has its left in a magnetic field directed into the page. S…

A: when we increase the magnetic field in the page so Loop pused itself on the right side because it…

Q: a potentian transformer is desired to allow safe reading on a 4600 v line.  what voltage ratio of…

A: Safe voltage= Vmax= 4600 volt secondary voltage of transformer = 120 volt      (generally considered…

Q: "In strainght current-carrying ocnductor, the field lines are" O circles O straight line outward…

A: The straight current carrying conductor the field lines are concentric circle whose  center lies on…

Q: How can one increase the strength of induced current?

A: There are two ways to do that : Strength of induced current increased when strength of magnetic…

Q: I • P One long straight wire connect ed to the DC power supol If f lows up to 25 A ) current a etion…

A: Given: I=25 A r=10 cm =0.1 m

Q: 25-16. A transformer draws power P and delivers a current I, in its secondary coil. (a) What is the…

A: Power = potential×current P=V×I

Q: 4) A solenoid with a radius of 15 cm and 150 loops is placed in a B field of 45 T. The B field drops…

A: radius, r=0.15 mnumber of turns, n=150magnetic field, B=45 Ttime, t=2 min           =120 sec

Q: (I) How much current is flowing in a wire 4.80 m long if themaximum force on it is 0.625 N when…

A: Given Data: The length of the wire is, l = 4.80 m. The maximum force is, F = 0.625 N. The magnetic…

Q: 1) A 225-turns circular loop of radius 20 cm, carries a current of 24 A creates a torque of 355 N m…

A: Given data: -  The number of turns of a circular loop is n = 225 turns. The radius of loop is r =…

Q: Why can a hum usually be heard when a transformer is operating?

A: A transformer is a device which is used to convert high to low and low to high ac voltages.

Q: Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is…

A: Faraday's Law gives us the concept of the induced emf being equal to the rate of change of magnetic…

Q: The figure below shows a conducting bar of mass m 0.200 kg that can slide without friction on a pair…

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Q: . Sketch a graph of current value against time for two complete cycles of an alternating current of…

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Q: Three 1100/110 V transformers are connected AA and supply a lighting load of 120 kW. If one of these…

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Q: A bar is moved along conducting rails at a constant 2.0 m/s in the presence of a 1-tesla magnetic…

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Q: furns and a secondary colil aof 88 turns b) resistor lamp AC A Figure 18.36 a) If the primary coil…

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.