Two long, straight wires are parallel and 16 cm apart. one carries a current of 2.9 a, the other a current of 5.7 a. (a) if the two currents flow in opposite directions, what is the magnitude (in n/m) and direction of the force per unit length of one wire on the other?
the answer is b. 11 hz
speed = (change in distance) / (time for the change)
distance from top to bottom of segment c = (6 - 0) = 6 m
time from beginning to end of segment c = (14 - 4) = 10 s
speed = (6 m) / (10 s)
speed = 6 m/s
in this question we have given that
velocity of bus= towards east
velocity of man= towards east
it means both are moving in the same direction
therefore velocity of man in the frame of reference of a stationary observer is given as=velocity of bus+velocity of man
= towards east
therefore, therefore velocity of man in the frame of reference of a stationary observer is towards east
when the compass placed near the working of electric wire, the compass needle will be redirected towards the magnetic field created by wire.
the electric wire cause the magnetic field just like a magnet causes magnetic field.
the electric currents always produces their magnetic fields. when we put the compass near the electric wire the current passes through it, and the needle of the compass will not move in north or south, instead, the needle will be pointed in the direction of magnetic field created by the wire.