Answer: During the flowering season, beehives are kept in a crop field to improve pollination and hence increase crop output. Also, without much foraging, bees can readily collect large amounts of nectar from the flowers of the crop in close proximity. This boosts the amount of honey produced.
Why does the yield of both crop and honey increase when bee-hives are kept in mustard crop fields during flowering season ? Explain
Why does the yield of both crop and honey increase when bee-hives are kept in mustard crop fields during flowering season ? Explain
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west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.