### Transformer Coil Pairs for Supplying Electricity**Question 1:**If the electrical power lines in a certain neighborhood deliver electricity at 72,000 volts, which combination of the following transformer coil pairs will supply electricity at 120V to customers' homes? (Primary coil first, secondary into homes second.) **Options:**A) 15,000 :: 25B) 25 :: 15,000C) 600 :: 120D) 120 :: 600E) 15,000 :: 120---### Explanation:To solve this problem, we need to determine which pair of transformer coils can step down the voltage from 72,000 volts to 120 volts as required for the household electricity supply.#### Basic Transformer Formula:\[ \frac{V_p}{V_s} = \frac{N_p}{N_s} \]Where:- \( V_p \) = Primary voltage- \( V_s \) = Secondary voltage- \( N_p \) = Number of turns in the primary coil- \( N_s \) = Number of turns in the secondary coilFor the given problem:- \( V_p = 72,000 \) volts- \( V_s = 120 \) voltsLet's analyze each option:**Option A)** 15,000 :: 25\[ \frac{72,000}{120} = 600 \Rightarrow \frac{15,000}{25} = 600 \]This pair works because \( \frac{N_p}{N_s} = 600 \).**Option B)** 25 :: 15,000\[ \frac{72,000}{120} = 600 \Rightarrow \frac{25}{15,000} = 0.00166 \]This pair does not work because the ratio is not 600.**Option C)** 600 :: 120\[ \frac{72,000}{120} = 600 \Rightarrow \frac{600}{120} = 5 \]This pair does not work because the ratio is not 600.**Option D)** 120 :: 600\[ \frac{72,000}{120} = 600 \Rightarrow \frac{120}{600} = 0.2 \]This pair does not work because the ratio is not 600.**Option E)** 15,000

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

Answered: 1) If the electrical power lines in a…

Similar questions

Calculate the peak voltage of a generator that rotates its 100-turn, 0.100 m diameter coil at 3600 rpm in a 0.800 T field.
A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected to a 18-V source. (a) What is the voltage output of the secondary? V(b) If 3 A flows in the primary coil, how much current is there in the secondary coil? A
An alternating current is given by i=20 sin 600t amperes. Find 1. Frequency 2. Peak value of the current 3. The time taken from t=0 for the current to reach a value of 10A
Can you help with 5a and subquestion 5b 5a. An American traveler in Australia carries a transformer to convert Australia’s standard 230 V to 115 V so that she can use some small appliances on her trip. What is the ratio of turns in the primary and secondary coils of her transformer? 5b. What is the ratio of input to output current? (How could a Australian traveling in the United States use this same transformer to power her 230 V appliances from 115 V?) This is not and will not be graded
Will a transformer operate if a battery is used for the input voltage across the primary? Explain.
quantities increase except for a.) the speed of the bar. b.) the strength of the magnetic field. c.) the distance between the two conducting rods. d.) the resistance of the resistor. e.) All of the above increase the current generated by the apparatus; there are no exceptions. 3.) The resistance of an RLC circuit is doubled. What is true about the resonant frequency of the circuit? W。こ LC a.) The resonant frequency is doubled. b.) The resonant frequency is halved. c.) The resonant frequency is quadrupled. d.) The resonant frequency is reduced by a factor of 1/4th. e.) The resonant frequency is independent of resistance and therefore remains the same. 4.) At high frequencies, the reactances of an inductor and capacitor are N low