Answer:
current I = 38 mA
Explanation:
given data
distance r = 7.2 cm
repel each other force per unit length \frac{F}{l} = 4.2 nN/m
solution
we know 2 wire is parallel and when current flow through these wire they exert force each other due to magnetic field
and current I(1) = I(2) ................1
so
..................2
put here value
4.2 ×
=
solve it we get
I = 0.038884 A
current I = 38 mA
Answer:
Check below for the explanation
Explanation:
Since it is stated that the ring is dropped from a height, h, through a non uniform magnetic field, two kinds of force will act on the ring, namely:
- A magnetic force (that is non uniform since the field is non uniform)
- Gravitational force
A certain amount of torque is provided by the non uniform magnetic force on the ring while the force gravity pulls it down. Due to the downward pull by the force of gravity on the ring and the torque acting on it as a result of the non uniform magnetic force, the ring begins to rotate.
Answer:
D is the answer
Explanation:
But do u know if im right test it out then surprise