please help. step by step solution. thanks 4. In the figure below, a metal condu

Question

please help. step by step solution. thanks

4. In the figure below, a metal conducting rod connects two conductors held at a potential difference of 1.2 V. There s also a uniform magnetic field directed into the page with magnitude 0.80 T. When you place the rod as shown in the diagram, current begins running through it. You happen to know that the resistance of the rod is 2.4 2, its mass is 50 g, and its length is 15 cm a) Calculate the current running through the conducting rod b) Calculate the magnetic force acting on the rod c) Calculate the speed that the rod would be shot out at if we turn the magnetic field off after 2.0 seconds 15 cm X X X X 1.2 V X X X B 0.80 T

Explanation / Answer

V = 1.2 V

B = 0.80 T

R = 2.4 Ohm

m =50 grams= 0.05kg

L = 15 cm= 0.15 m

a) current =i = V/R

i = 1.2/2.4

i = 0.50 A

b)magnetic force acting on the rod =F= B*I*L

F= 0.80 * 0.50 * 0.15

F = 0.06 N

c) F= m a

a= F/m= 0.06/0.05

a=1.2 m/s2

using Vf= Vi + at

Vf=0+1.2 (2)

Vf = 2.4 m/s

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