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11 A step-up transformer has 10 primary turns and 100 secondary turns. If the primary current...
A step-up transformer has 23 turns on the primary coil and 800 turns on the secondary coil. If this transformer is to produce an output of 5000V with a 14-mA current, what input current and voltage are needed? Input current = .49 A V = ? kV
A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is this a step-up or step-down transformer? (b) If the primary is connected across 120 V rms, what is the open-circuit voltage across the secondary? ( ) V (c) If the primary current is 0.3 A, what is the secondary current, assuming negligible magnetization current and no power loss? ( ) A
. An ideal transformer has 600 turns on its primary side and 100 turns on its secondary side. The primary voltage is 1000 V AC. a. Is this transformer considered to be Step-Up or Step-Down? b. What will the secondary voltage be with this configuration? c. What is the secondary current if the primary current is 100 A? d. The primary windings are reconnected to a 1000 V battery (DC) for a long time. What is the secondary voltage?
An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
An ideal step-down transformer has a primary coil of 350 turns and a secondary coil of 10 turns. Its primary coil is plugged into an outlet with 220 V (AC). If the current in the secondary coil is 14.35 A, what current does the primary coil draw?
A transformer has 490 turns in the primary coil and 140 in the secondary coil. Part A What kind of transformer is this? A. step-up B. step-down Part B By what factor does it change the voltage? Assume 100% efficiency. Part C By what factor does it change the current?
An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 25 turns. Its primary coil is plugged into an outlet with 110 V(AC), from which it draws an rms current of 0.83 A. 1.)What is the voltage in the secondary coil? 2.)Calculate the rms current in the secondary coil. 3.)Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
An ideal transformer has a primary winding with 100 turns and a secondary winding with 20 turns. If the primary winding has a voltage drop of 10 V AC, what is the EMF in the secondary coil? A. 100 V AC B. 10 V AC C. 2 V AC D. 20 V AC
A step-down transformer with 500 primary turns and 15 secondary turns is used for a rechargeable device. The input voltage is 110V, while the output current is 0.25A. a. What is the voltage output, the current input, and the power (input or output)?
A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary coil. The primary coil is connected to standard household voltage (rms = 120.0 V, 60.0 Hz). Suppose the secondary coil is connected to a 12.0-Ω resistor. (a) What is the maximum current in the resistor? (b) What is the average power dissipated by the resistor?