physics

1. x-ray machine operates at 200 kv with a current of 10 mA. The power mus be produced by a transformer which raises the voltage from 220 volts to 200 kilovolts. The power going into and out of the transformer is the same. How much current must flow in the 220 volt line to operate the x-ray machine??

having problem understanding this problem, need help setting up problem.

The power of the machine, in terms of the transformer output voltage and current, is 200*10^3 V x 10^-2 A = 4000 Watts.
The same power flows in the transformer primary, as
4000 W = 220 V x I (amps)

Solve for I

  1. 👍 0
  2. 👎 0
  3. 👁 75
asked by mitch

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    An X-ray tube used for cancer therapy operates at 4.04 MV with a beam current of 23.4 mA striking a metal target. Calculate the power of this beam.

    asked by will on February 12, 2014
  2. Physics

    An X-ray tube used for cancer therapy operates at 33 MV with a beam current of 79 mA striking a metal target. Calculate the power of this beam. Answer in units of W

    asked by Cameron on May 5, 2013
  3. physics

    A hose contains 20 lamps of 200 W for each lamp and a heater of power 1500 W. they are all connected to supply voltage of 240 volt. Calculate; (a) The total current when all loads operates at the same time. (b) Total energy when

    asked by fady on May 16, 2017
  4. Linear Programming

    We produce two products: product 1 and product 2 on two machines (machine 1 and machine 2). The number of hours of machine time and labor depends on the machine and the product as shown in Table 64. The cost of producing a unit of

    asked by AB on September 12, 2014
  5. Physics

    A cathode ray tube operates at 80 kV with a current of 875 uA. Calculate the a)Intesity (# of photons per second f the x-rays b)Minimum wavelength of the x-rays produced by the CRT thanks in advance

    asked by ALan on December 7, 2009
  6. Physics

    a great of effort, time, and money has been spent in the quest for the so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/ or a machine that

    asked by John on November 16, 2016
  7. Health Physics

    A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to

    asked by Shannon on January 22, 2010
  8. Physics

    A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to

    asked by Anonymous on January 24, 2010
  9. Health Physics

    A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to

    asked by Shannon on January 23, 2010
  10. Physics

    Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A.

    asked by jamya on May 12, 2013

More Similar Questions