Description
need help inquestions 1b , 2b, 3 and 4 please
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Explanation & Answer
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Question1 (b)
100 turns of insulated copper wire are wrapped around an iron core of cross-sectional area
0.001m^2. The circuit is completed by connecting the wire to a 20 Ω resistor. The magnetic
field along the coil axis is made to change from 1 T in one direction to 1T in the other
direction. What is the total charge that flows through the resistor in this process?
Answer:
As per Faraday law’s
d
d NBA
dB
NA
dt
dt
dt
And IR
qR
t
Therefore, from above two equations, we have
qR
dB NAB
NA
t
dt
t
NAB 100 0.001 2
q
0.01 Coulumb
R
20
Question 2(b)
The distance between the right side of the loop and the left edge of the field region x
As when t 0 , x 0 ; therefore, x vt.
0.50...