Exercises - Form IV - ELECTROMAGNETISM - ACTIVITY 1

ACTIVITY 1
1.       Under what conditions does the charge affect a magnet?
2.       The figure below shows two parallel wires. What would be the effect of passing
a)      Upward current through both wires.
b)      An upward current through wire A and a download current through wire B?
3.      (a) An electric current flows in a copper wire from north to south direction. A compass
      needle is placed below this wire. What is your observation and inference?
(b) Sketch the magnetic lines of force due to a current through a straight conductor.
4.       Two straight parallel placed conductors carrying current in the same direction tends to contract. Why?
5.       On what factor does the strength of the magnetic field due to a straight conductor carrying current depend?

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