magnetism

Q1 Why does a compass needle deflect when brought near a bar magnet?

Q2 Draw a pattern of magnetic lines of forces around a bar magnet?

Q3 list the properties of a magnetic lines of forces

Q4 why do two magnetic lines of forces not intersect with each other?

Q5 why does a compass needle deflect when brought near a current carrying conductor?

Q6 A wire carries current from left to right direction . identify the magnetic north pole and south pole of a magnetic field of a current carrying wire.

Q7 How will you determine the direction of a magnetic field around a straight current carrying conductor.

Q8 List two factors which affect the strength of the solenoid magnetic field.

Q9 State fleming's left hand rule.

Q10 What is an earth wire? What is its use?

Q11 Differentiate between overloading and short circuiting.

Q12 State the rule for the direction of the magnetic field produced around a current carrying conductor. draw a sketch of the pattern of field lines due to a current carrying conductor.

Q13 What is a solenoid? Draw a pattern of field lines of the magnetic field through a current carrying solenoid

Q14 Consider a circular loop of wire lying in the plane of the table . let the current pass through the loop clockwise. apply the right hand rule to find out the direction of the magnetic field inside and outside the loop.

Q15 When is the force experienced by a current carrying conductor placed in a magnetic field largest.

Q16 what is the usual capacity of the fuse wire in the line to feed a) lights and fans b) appliances of 2kW or more power?