YASH
CLASSES
1 MAGNETIC EFFECTS
OF ELECTRIC CURRENT [ X ]
1. Define
the term magnetic
field .
2. What
are magnetic lines of
force ? give their properties .
3. State
right hand thumb
rule to find
the direction of the
magnetic field around a
current
carrying conductor . How will field be
affected on
(1)
increase the current through the
conductor ?
(2) changing
the direction of
flow of current
?
4. Why don’t two
magnetic lines of
force intersect each
other ?
5. How does the strength of the magnetic
field at
the center of
a circular coil
of wire depend on (1) the
radius of the
coil ,
(2) the
number of turns
of wire in
the coil ,
(3) the
strength of current
flowing in the
coil ?
6. What
is a solenoid ? What
factors does the strength
of the magnetic
field produce by a
current
carrying solenoid depend ?
7. What is a
electromagnetic ? What
factors does the strength of
the electromagnet depend ?
8. Difference
between an electromagnet and a permanent
magnet .