The primary coil of an ideal transformer is connected to a 120 V source and draws 1.0 A. The secondary coil has 800 turns and supplies an output current of 10 A to run an electrical device. a) What is the voltage across the secondary coil? b) How many turns are in the primary coil? c) If the maximum power allowed by the device (before it is destroyed) is 240 W, what is the maximum input current to this transformer?

Q: A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary…

A:

Q: Here you see the circuit board that I passed around in class one day, the control board from my…

A:

Q: The current in a coil changes steadily from 1.3 A to 2.5 A in the opposite direction, in 0.12 s. The…

A:

Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…

A: The potential of the batteries is VB=9.0 V The current in the batteries is IB=249 mA The potential…

Q: mer consists of 295 primary windings and lary windings. ▼ If the potential difference across the…

A: winding in primary coil (N1) = 295 winding in secondry coil (N2) = 834 Potential difference across…

Q: A typical wall outlet voltage in the United States is 120 volts. Personal MP3 players require much…

A:

Q: A step-down transformer (turns ratio =1:8) is used with an electric train to reduce the voltage from…

A:

Q: The power adapters of devices we use contain transformers. In one such adapter, the input to the…

A: Given that-Primary Current, IP= 1.8 APrimary Voltage, VP= 120 VoltSecondary Current, IS= 50 turnsWe…

Q: Nizhoni builds a transformer whose primary coil has 200 turns and secondary coil has 150 turns. She…

A:

Q: 4. A 6.0W ideal transformer is plugged into a 120 VAC wall outlet. The primary coil of the…

A: See below

Q: A generator supplies 100 V to a transformer’s primary coil, which has 50 turns. If the secondary…

A: We know,

Q: A step-up transformer is designed so that the output of its secondary winding is 240 V when the…

A:

Q: A transformer has 512 turns on its primary and 116 turns on its secondary. (a) Is this a step-up or…

A: A transformer that increases the voltage from primary to secondary (more secondary winding turns…

Q: Calculate the voltage output by the secondary winding of a transformer if the primary voltage is 230…

A: Given that-The voltage of primary winding, V1= 230 VoltNumber of turns of secondary winding, N2= 290…

Q: A transformer on a pole near a factory steps the voltage down from 3.60X103 Volts (rms) to 120.…

A: We need to calculate power delivered to the primary, current in primary as well as secondary coils.

Q: Problem 8: Suppose a large power plant generates electricity at 12.0 kV. Its old transformer once…

A: Part (a)Find the relation between current, power and voltage.

Q: A scale train transformer is plugged into 120 V ac and draws 0.35 A while supplying 7.5 A to the…

A:

Q: A transformer consists of 275 primary windings and 854 secondary windings. Part A If the potential…

A: A transformer contains primary and secondary coils. Windings are basically the number of turns in…

Q: The primary coil of a transformer is coupled to DC power supply (a battery) that provides an…

A:

Q: In a transformer, two coils are wound around a toroidal iron core. Answer True or False. True A…

A: A transformer is an electrical device that is used to transfer electrical energy between two or more…

Q: When a 240 V power supply supplies current which changes direction 100 times per second to the…

A:

Q: A sense coil is placed in the middle of a current spiral. The angle between the surface normal of…

A: Direction of the Magnetic field is parallel to the current spiral axis.

Q: Consider an induction stove utilizing a primary heating coil located just beneath the stove top. The…

A: Given : V=340V f=50kHz L=88mu.H R=1ohm To find: Average power dissipated in the coil

Q: When a 100 volt. D.C. is applied across a coil, a current of 1 amp flows through it. When a 100…

A: When 100 volt DC is applied 1 amp flows through it Therefore Resistance  = 100/ 1 = 100 ohm…

Q: A step-down transformer has 63 turns in its primary coil and 20 turns in its secondary coil. The…

A: Given: Number of turns in the primary coil, Np=63 Number of turns in the  secondary coil, Ns=20…

Q: An ac electrical generator is made by turning a flat coil in a uniform constant magnetic field of…

A:

Q: A step-down transformer has 56 turns in its primary coil and 30 turns in its secondary coil. The…

A:

Q: The primary coil of a transformer is connected to a standard wall socket. A resistance R is…

A:

Q: An iron core transformer is as shown in the figure. The primary coil has Np = 2000 turns and the…

A: The number of turns in the primary Np=2000 turns The number of turns in the secondary Ns=5000 turns…

Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…

A:

Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…

A: Vs = 9 V Is = 252 mA = 0.252 A Vp = 120 V

Q: A transforms has a voltage of 5000 V that comes out of it. If there are 3500 turns of wire on the…

A: Output/Secondary voltage (V') = 5000 volts Number of turns on output/secondary side (N') = 3500…

Q: The battery charger for cellphone contains a step-down transformer with a turns ratio 1:20, so that…

A:

Q: An inductor used in a de power supply has an inductance of 12.0 H and a resistance of 180 ohms. It…

A: Here inductance = L = 12.0 H resistance = R =180 ohms. current = I = 0.50 A. We have to calculate…

Q: The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket…

A:

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

A:

Q: A basketball player jumps straight up for a ball. To do this, he lowers his body 0.310 m and then…

A:

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

A:

Q: A transformer has 60 turns in the primary and 1935 turns in its secondary. The voltage across the…

A: Given: Number of turns in primary, N1=60 Number of turns in secondary, N2=1935 The voltage across…

Q: What is the emf in the entire coil at t=2.4 s? For the purposes of entering a sign, let the positive…

A: Consider given data as below. Number of turns, N=7000 turns Resistance, R=6.3 Ω A current,…

Q: A primary coil of a transformer is connected to a 120V source and draws a 12 A. The secondary coil…

A:

Q: A step-down transformer has 62 turns in its primary coil and 40 turns in its secondary coil. The…

A: