During a Physics lab class the teacher gave a magnet and a coil to each student (as shown in figure) to observe electromagnetic induction. Student A used north pole and Student B used south pole of magnet to do experiment. As per your knowledge about electromagnetic induction and the figure shown, answer the questions given :
20 i) When student A will move North pole of magnet away from the coil, then
a) needle will deflect towards right.
b) needle will deflect towards left.
c) No deflection in needle.
d) needle will deflect first right and then left.
20 ii) Student B just kept magnet close to the coil. He would observe
a) deflection towards right.
b) Deflection towards left.
c) Needle will keep deflecting left and right.
d) No deflection of needle.
20 iii) What type of energy conversion is observed in this phenomenon?
a. Mechanical to electrical.
b. Electrical to Magnetic.
c. Electrical to Mechanical.
d. Mechanical to Magnetic.
20 iv) Name the rule used to find the direction of the current induced .
a) Fleming’s left hand rule
b) Fleming’s right hand rule.
c) Right hand thumb rule
d) Clock rule.
20 v) The other method by which current can be induced in the coil is
a) By putting a coil carrying constant current near this coil.
b) By keeping switch of other coil on for long time.
c) By keeping switch of other coil off for long time.
d) By moving the current carrying coil towards or away from this coil with switch in on position.
Answers
Answer:
During a Physics lab class the teacher gave a magnet and a coil to each student (as shown in figure) to observe electromagnetic induction. Student A used north pole and Student B used south pole of magnet to do experiment. As per your knowledge about electromagnetic induction and the figure shown, answer the questions given :
20 i) When student A will move North pole of magnet away from the coil, then
a) needle will deflect towards right.
b) needle will deflect towards left.
c) No deflection in needle.
d) needle will deflect first right and then left.
20 ii) Student B just kept magnet close to the coil. He would observe
a) deflection towards right.
b) Deflection towards left.
c) Needle will keep deflecting left and
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