Spike left his car headlights on overnight and the battery has gone flat. Carly suggests that rather than using her car to recharge the battery they instead build a battery charger so he can do it himself. She suggests that he modify an old transformer that they don't need anymore to do the job. The old transformer has a primary coil of 309 turns. It will need to be connected to mains voltage (240 V) and put out a voltage of  11 V  to charge the car battery. How many turns should Spike wind to make the secondary coil? (No decimals, no units)

Q: Halogen bulbs have some differences from standard incandescent lightbulbs. They are generally…

A:

Q: An ideal transformer has 60 turns in its primary and 270 turns in its secondary. When 120 Volts AC…

A:

Q: A transformer is used to supply a 11.25 V mo with power from a 128 V wall plug. The train at 96 W of…

A:

Q: A generator supplies (2.460x10^2) V to the primary coil of a transformer. The primary has 50 turns…

A: Given data :  Voltage in primary coil Vp = 2.460 × 102 V  Number of turns in primary coil Np = 50…

Q: The charger cord used to recharge a cell phone contains a transformer that reduces I20 V AC to 5…

A:

Q: A transformer has 496 turns on its primary and 122 turns on its secondary. (a) Is this a step-up or…

A: (a) For transformer, Here, Vs, Vp, Np and Ns represent the secondary voltage, the primary voltage,…

Q: A. Calculate the secondary number of turns of the given transformer and Identify the types used.…

A: The transformer equation relating the primary and secondary voltages to the number of turns in the…

Q: Calculate the following: Calculated Values Load Resistance used in ohms Primary coil turns (Np)…

A:

Q: A transformer has 400 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given :     Number of turns in primary, NP = 100    Number of turns in secondary, NS = 400…

Q: Calculated Values Load Resistance used in ohms Primary coil turns (Np) Secondary coil turns (Ns)…

A:

Q: A generating station is producing 1.4 x 106 W of power that is to be sent to a small town located…

A: Given: P = 1.4*106Wd = 5.6 kmr = 4.5*10-2 Ω/KmV=1600 VNs/Np=100/1

Q: Question 8 900 turns 2200 400 2 500 Ω turns 3.3 k2 Calculate all voltages and all currents in this…

A: Given data: The primary turns is Np=900. The secondary turns is Ns=2200. The voltage drop across…

Q: transformer is used to step down 160 V from a wall socket to 9.3 V for a radio. (a) If the primary…

A:

Q: QUESTION 1 A plug-in transformer supplies 7.3 V to a video game system. How many turns are in its…

A: Given that:-Tramsformer supplies 7.5 Volt to a video game system.Vout=7.5 VoltIf the input voltage…

Q: From time to time, transformers explode. If your neighborhood has ever lost power all at once, this…

A: We are given voltage in primary and secondary coils. We are given turns in secondary coil. We first…

Q: In a non-ideal transformer, provide a physical explanation as to why the current in the primary coil…

A: consider the transformer arrangement as shown

Q: She suggests that he modify an old transformer that they don't need anymore to do the job. The old…

A:

Q: A transformer is used to supply a 10 V model train with power from a 114 V wall plug. The train…

A:

Q: 11. A small power plant produces a voltage of 6.0 kV and 150 A. The voltage is stepped up to 240 kV…

A: Solution:-Given thatInitial Voltage (Vi)=6 kV=6×103 VCurrent (Ii)=150 AFinal Voltage (Vf)=240…

Q: Neon signs require about 12,000 V for their operation. Consider a neon-sign transformer that…

A:

Q: Ex.3-Cell phone charger. The charger for a cell phone contains a transformer that reduces 120- V (or…

A: V1= 120v  V2= 5v  N2= 30

Q: An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is…

A: The output voltage is,

Q: Current Attempt in Progress Reconfiguring a Transformer. You and your team are exploring an…

A: Step 1:Step 2:Step 3:Even 1176 turns is also acceptable answer.Step 4:

Q: The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air…

A:

Q: A transformer has 400 turns on its secondary and 100 turns on its primary. The primary is connected…

A: Given: The number of turns in primary coil is N1=100 The number of turns in secondary coil is…

Q: A transformer has 20 turns of wire in its primary coil and 80 turns on its secondary coil. (a) Is…

A: Given : Number of turns in primary coil (Np) = 20 Number of turns in secondary coil (Ns) = 80…

Q: A generator produces 60 A of current at 120 V. The voltage is usually stepped up to 4500 V by an…

A: Given data: Voltage in primary coil (V1) = 120 V Voltage in secondary coil (V2) = 4500 V The number…

Q: (i).    what is the voltage in the secondary coil?…

A:

Q: A transformer is used to supply a 14 V model train with power from a 138 V wall plug. The train…

A: A 14 V train is supplied power by a 138 V wall plug.

Q: A generator supplies (1.049x10^2) V to the primary coil of a transformer. The primary has 500 turns…

A: Given data ,  Voltage of primary coil (Vp) = 1.049×102 V Np = 500 Ns= 50  Here we use transformation…

Q: A generating station is producing 1.4 x 106 W of power that is to be sent to a small town located…

A: Power generated (P) = 1.4×106 Watt distance (d) = 5.6 km resistance per unit length of each wire =…

Q: Name the transformer used in the (a) power generating station (b) power sub station. State the…

A: (a).The transformer used in the power generating station is step-up transformer of high voltage…

Q: (a)The primary of a step-up transformer connected to a 120 V source has 200 turns.  If the output is…

A:

Q: A plug-in transformer supplies 9.00 V to a video game system. (a) How many turns are in its…

A: For a transformer, VsVp=NsNp=IpIs…

Q: A multipurpose transformer has a secondary coil with several points at which a voltage can be…

A:

Q: An array of solar panels produces 8.65 A of direct current at a potential difference of 148 V. The…

A: Given: A solar panel produces a current of 8.65 A at a potential difference of 148 V.  The…

Q: When I visit family in India, I usually need an adapter to use my US bought electrical devices (hair…

A: Given, Vinput=220 VVoutput=110Vnprimary=100

Q: A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If the secondary voltage is 240…

A:

Q: Consider a transformer in which the primary has 400.0 turns and the secondary 50.0. Given an input…

A:

Q: ransformer has 770 primary and 190 secondary turns. An alte V is applied to the primary. What is the…

A: Given values:- Number of primary turns,(NP)=770 -----(1) Number of secondary turns,(NS)=190 -----(2)…