V= ? 17,000 V 21. From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. ( Assume transformers are ideal and don't heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these

V= ? 17,000 V 21. From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. ( Assume transformers are ideal and don't heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 44P: A step-up transformer is designed so that the output of its secondary winding is 2000 V(rms) when...

See similar textbooks

Similar questions

A step-up transformer is designed so that the output of its secondary winding is 2000 V(rms) when the primary winding is connected to a 110-V (rms) line voltage, (a) If there are 100 turns in the primary winding, how many turns are there in the secondary winding? (b) If a resistor connected across the secondary winding draws an rms current of 0.75 A. what is the current in die primary winding?
Check Your Understanding A transformer steps the line voltage down from 110 to 9.0 V so that a current of 0.50 A can be delivered to a doorbell (a) What is the ratio of the number of turns in the primary and secondary windings? (b) What is the current in the primary winding? (c) What is the resistance seen by the 110-V source?
Check Your Understanding An ac voltmeter attached across the terminals of a 45-Hz ac generator reads 7.07 V Write an expression for the emf of the generator.
Check Your Understanding Repeat Example 15.1 for an ac source of amplitude 20 V and frequency 100 Hz.
Will a transformer work if the input is a dc voltage?
Does the induced emf always act to decrease the magnetic flux through a circuit?
When a camera uses a flash, a fully charged capacitor discharges through an inductor. In what time must the 0.100-A current through a 2.00-mH inductor be switched on or off to induce a 500-V emf?
What is the self-inductance of a coil whose reactance is 10 at 60 Hz?
What is the self-inductance of an LC circuit that oscillates at 60 Hz 1ien the capacitance is 10 F ?
When the current in the RL circuit of Figure 14.12(b) reaches its final value /R, what is the voltage across the inductor? Across the resistor?
Does the time required for the current in an RL circuit to reach any fraction of its steady-state value depend on the emf of the battery?
Do Kirchhoff’s rules apply to circuits that contain inductors and Capacitors?