Question

please answer this question answers
class 10 Physics
chap Magnetic Effect of Electric Current​

Answer 1

Answer:

1) When current is flowing through the solenoid, the magnetic field line pattern resembles exactly with those of a bar magnet with the fixed polarity, i.e. Hence, the current carrying solenoid behave as a bar magnet.

2) The path traced by a North magnetic pole free to move under the influence of a magnetic field is called a magnetic field line.

(a) The magnetic field lines do not intersect or cross one another. This is due to the fact that the resultant force on a North Pole at any point can be only in one direction.

(b) Magnetic field lines are closed curves or forms a closed loop. This is because two magnetic field lines can never intersect. And forming closed curves enable the lines to run different from each lines and not intersect to each other.

4) Most electrical hazards in domestic circuits are caused by the faulty electrical outlets, old and out-dated appliances. The chances of short circuit i.e., contact of live wire and neutral wires with each other due to damage in their insulation or some fault in the appliances are very high.

 

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