1. The conductive bar m = 45g starts moving from rest, the magnetic field B = 2.8T, the length of bar inside of B field L = 22cm and the resistance of the bulb R=2.252. What is the induced emf E on the bar when it reaches the largest speed? Find the largest speed of the bar.
1. The conductive bar m = 45g starts moving from rest, the magnetic field B = 2.8T, the length of bar inside of B field L = 22cm and the resistance of the bulb R=2.252. What is the induced emf E on the bar when it reaches the largest speed? Find the largest speed of the bar.
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Transcribed Image Text:1. The conductive bar m = 45g starts moving from rest, the magnetic field B = 2.8T, the length of
bar inside of B field L=22cm and the resistance of the bulb R=2.292. What is the induced emf E
on the bar when it reaches the largest speed? Find the largest speed of the bar.
2. Find the induced current direction in the loop.
O
D
D
O
Q
6
O
S
0
RI
O
O
Secondary circuit
O
C
O
turns, 1₂ =
3. The primary coil with N₁ = 6400 turns 1₁ = 12cm, the secondary coil with N₂ = 1400
6.0cm, r₁ r₂ = 2.4cm. E = 12V, adjustable R changes from 1652 to 480 in 230ms, R₁ = 2202.
Find the current of R₁ and direction. (Resistance of coils can be ignored and no magnetic flux loss)
O
Primary circuit
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