A coil of wire is connected in series with a battery, a rheostat and a switch as shown in figure

      

A coil of wire is connected in series with a battery, a rheostat and a switch as shown in figure
p4420191146.png
(i) Draw on the diagram, the shape of the magnetic field inside and outside the coil when the
switch is closed.
If the jockey J on the rheostat is moved towards Q what’s the effect on:-
(ii)The resistance of the circuit
(iii) The current through the coil
(iv) The magnetic field in the coil

  

Answers


sharon
i)p4420191149.png
(ii) Resistance in the circuit increase.
(iii) Current reduces.
(iv) Become less stronger.
sharon kalunda answered the question on April 4, 2019 at 08:50


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