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The figure below shows an arrangement for lighting three lamps, A, B and C only one of which is controlled directly by the switch.

      

The figure below shows an arrangement for lighting three lamps, A, B and C only one of which is controlled directly by the switch.
physics2532019330.png
a) Which of he lamp is directly controlled by the switch?
b) What is the name given to this use of an electromagnet?
c) Which lamps can be on at once?
d) Explain how lamp C comes in.

  

Answers


sharon
a) Lamp B
b) Magnetic relay
c) B and C
d) When soft iron in the solenoid is magnetised, it attract the soft ion
sharon kalunda answered the question on March 25, 2019 at 12:42


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