Miracle Learning Centre Physics Tuition Question on Electromagnetism. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition)
Fig. 10.1 shows a metal rod AB placed on two smooth horizontal rails that are fixed in position. The magnetic field is directed perpendicularly into the plane of the paper.
(a) Describe and explain what happens to the rod AB when switch S is closed.
(b) State the effect on the movement of rod AB (if any) when
(i) the current is increased; [1]
(ii) the separation between the rails is decreased. [1]
(c) Suggest one way of reversing the movement of the rod AB. [1]
Miracle Learning Centre Answer to Science Tuition Question on Electromagnetism. (O Level Science Tuition/IP Science Tuition/Secondary Science Tuition) 10 (a) AB will move to the right. [A1] A current carrying wire will experience a force when it is placed in a magnetic field. [A1] (b)(i) It will move faster. [A1] (ii) It will move slower. [A1] (c) Reverse the direction of the current / magnetic field [A1]
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