4. (a 5) Power stations are normally far away from the customers. A transformer is often used to increase the voltage to a high value. Why do we use the high voltage to transmit the electricity? (b5) For an ideal transformer, if the number of turns in the primary coil s 3000 and the voltage is 45 kV, to get 120 V from the secondary coil, how many turns

Question
4. (a 5) Power stations are normally far away from the customers. A transformer is often
used to increase the voltage to a high value. Why do we use the high voltage to transmit
the electricity? (b5) For an ideal transformer, if the number of turns in the primary coil
s 3000 and the voltage is 45 kV, to get 120 V from the secondary coil, how many turns
View transcribed image text
Expand

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Science
Physics

Current Electricity

Related Physics Q&A

Find answers to questions asked by students like you.

Q: A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional forc...

A: Using the law of conservation of energy,

Q: The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a...

A: The mass of the lighter box = 8 kg.The mass of the heavier box = 35 kg.The distance between point A ...

Q: How long does it take electrons to get from a car battery to the starting motor? Assume the current ...

A: Time taken by electrons is,

Q: The figure below shows three charges at the corners of a rectangle of length x = 0.65 m and height y...

A: Write the expression for the distance between charges +2.7micro Coulomb and -3.3 micro Coulomb.

Q: The altitude of a hang glider is increasing at a rate of 6.90 m/s. At the same time, the shadow of t...

A: Let vx be the velocity along ground and vy be the velocity along altitude, since the sun is vertical...

Q: The figure shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of ...

A: Given that the mass of both particles is m. The torque acting on an object is the product of force a...

Q: 4. A bar on a hinge starts from rest and rotates with an angular acceleration α 10 + 6, where α is i...

A: Given: alpha = 10 + 6ttime, t = 4 sFind:  The angle in radians through which the bar turns in the fi...

Q: A solenoid having an inductance of 6.92 μH is connected in series with a 1.57 kΩ resistor. (a) If a ...

A: (a)The equation for the instantaneous current in an RL circuit is given by

Q: (a) In an RLC circuit, can the amplitude of the voltage across an inductor be greater than the ampli...

A: From the above equation it is shown that the amplitude of volatge across the inductor is greater tha...

Q: Through experiment, the speed of light passing through material A is 1.4 times greater than when the...

A: Refractive index of a material is defined as the ratio of speed of light in vacuum to the speed of l...

Q: An alternating source drives a series RLC circuit with an emf amplitude of 6.24 V, at a phase angle ...

A: Write the expression for the resultant emf.

Q: Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizo...

A: Given:

Q: A single-loop circuit consists of a 7.0 Ω resistor, 12.2 H inductor, and a 3.1 μF capacitor. Initial...

A: Given,

Q: the sound in the united center during a Chicago Bulls basketball game in 1998 was seven times as int...

A: The decibel rating today = 89dB.The intensity of sound in 1998 is 7 times as that of today.

Q: A single-turn current loop, carrying a current of 5.71 A, is in the shape of a right triangle with s...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: The figure shows a parallel-plate capacitor with a plate area A = 4.07 cm2 and plate separation d = ...

A: Given:

Q: The switch in the figure is closed on a at time t = 0. What is the ratio εL/ε (a) just after t = 0 a...

A: At time t = 0, the switch is closed and the circuit is complete. As the current increase in the indu...

Q: a test rocket is falling downward at a constant speed (however, it is acceleration in the horizontal...

A: The figure gives the free body diagram of all forces acting on the rocket.

Q: An ac generator with Em = 211 V and operating at 398 Hz causes oscillations in a series RLC circuit ...

A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not mentione...

Q: Data Table 1 Trial No. f (Hz)2 egment ength 33.3 5 33.S Data Analysis 1. Plot a graph of Frequency s...

A: 1.The plot of f  2 versus n2 is given below.

Q: Please show me how to work this. Don't round any figures please.

A: (a) The scalar product also known as dot product, is computed as follows.

Q: Some species of whales can dive to depths of one kilometer. What is the total pressure they experien...

A: The total pressure experience at the depth can be calculated using following steps:Given:

Q: At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three di...

A: (a) Given that F1=50N and F2=90.Write vector form of each forces.

Q: a bridge across a small stream is made by supporting a 10m long log with a mass of 75kg with ropes t...

A: Let the mass of the log is M and the mass of the child is m. For y direction the torque equation is ...

Q: A golfer imparts a speed of 33.4 m/s to a ball, and it travels the maximum possible distance before ...

A: The ball is making a projectile motion.hence the time spend by ball on air is the time of flight of ...

Q: A long solenoid has 100 turns/cm and carries current i. An electron moves within the solenoid in a c...

A: Magnetic field in the solenoid is given by :

Q: Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has...

A: Given,

Q: The figure shows light reflecting from two perpendicular reflecting surfaces A and B. Find the angle...

A: GivenThe incident ray I makes an angle θ with the normal

Q: At the end of a race a runner decelerates from a velocity of 8.00 m/s at a rate of 0.500 m/s2. (a) H...

A: Given,

Q: An electric motor has an effective resistance of 33.4 Ω and an inductive reactance of 49.4 Ω when wo...

A: Write the expression for the rms current of  a LR circuit.

Q: Two objects attract each other gravitationally with a force of 2.5x10^-10 N when they are 0.25 m apa...

A: The force due to gravity between two massive objects having a total mass of 4.0 kg is 2.5×10-10 N, w...

Q: In the figure particle 1 of charge +6e is above a floor by distance d1 = 3.60 mm and particle 2 of c...

A: Its given that:

Q: A toroid having a square cross section, 5.73 cm on a side, and an inner radius of 21.3 cm has 400 tu...

A: Given:

Q: 127 CHAPTER 3 tom of the tank when the elevator is (a) stationary, (b) mov- ing up with an upward ac...

A: (i) Consider the figure when water tank is in stationary elevator.Here, h is the height of this liqu...

Q: A wheel (radius -0.20 m) is mounted on a frictionless, horizontal axis. A light cord wrapped around ...

A: Click to see the answer

Q: A motorcycle daredevil is attempting to jump across as many buses as possible (see the drawing). The...

A: The bike is making a projectile motion and the horizontal distance travelled by bike is equal to te ...

Q: A 1 m 5 m B E SR 3 FIGURE P3-74 is W M 50 ab Reconsider Prob. 3-74. Using appropriate soft- ware, in...

A: Click to see the answer

Q: a parachutist jumping from an airplane reaches a terminal velocity when the force of air resistance ...

A: Given that the parachutist reaches a terminal velocity when the force of air resistance is 980N. Whe...

Q: A traveler pulls on a suitcase strap at an angle of 36 degrees above the horizontal. If 555 J of wor...

A: The work done on the strap=555 J.The distance moved by the strap =15 m.The angle made with the horiz...

Q: A man is holding an 8.00-kg vacuum cleaner at arm's length, a distance of 0.550 m from his shoulder....

A: The weight of the vacuum cleaner is 8.00 kg, its distance from the shoulder is 0.550 m and it is hel...

Q: 1. what is the relationship between the currents I1, I2, and I3 at junction A. 2. what is Kirchhoff ...

A: (1)According to the Kirchhoff’s current law, the total current in the junction A is,

Q: A stone is thrown upward from a bridge at a speed of 10m/s. it narrowly misses the bridge on the way...

A: The expression for the height of the bridge from kinematics equation,

Q: Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has...

A: Given,

Q: Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 10,700 kg. T...

A: To find:The mass of a fully loaded module is 10,700 kg. The thrust of its engines is 26,500 N. The g...

Q: Chapter 23, Problem 033 In the figure two large, thin metal plates are parallel and close to each ot...

A: The magnitude of surface charge density of the plates is 6.40×10-22 C/m2. Consider the metal plates ...

Q: A weight lifter can bench press 171 kg. how many miligrams (mg) is this?

A: This is the conversion from 1 kilogram to milligram

Q: In the figure, a particle moves along a circle in a region of uniform magnetic field of magnitude B ...

A: Magnetic force given is positive. Velocity vector is along – y direction and magnetic field is along...

Q: Two long parallel wires 10cm apart each carry a current of 8 mA in the same direction. What is the m...

A: Magnetic field due to the upper wire is,

Q: A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box the su...

A: The mass of the box=55kg.The coefficient of static friction =0.30.The coefficient of kinetic frictio...

Q: An electron is moving through a region with a uniform magnetic field, as shown below. Which arrow re...

A: The equation for the magnetic force on a charged particle in a magnetic field is given by the cross ...

Transcribed Image Text

4. (a 5) Power stations are normally far away from the customers. A transformer is often used to increase the voltage to a high value. Why do we use the high voltage to transmit the electricity? (b5) For an ideal transformer, if the number of turns in the primary coil s 3000 and the voltage is 45 kV, to get 120 V from the secondary coil, how many turns