What determines the polarities of v3 and v2 in Figure 3.8?

  • Thread starter Thread starter PainterGuy
  • Start date Start date
AI Thread Summary
The polarities of v3 and v2 in Figure 3.8 are determined by the directions of the currents I3 and I2. The discussion confirms that the polarities are influenced similarly by other currents, such as i2 and i4. Understanding the relationship between current directions and voltage polarities is crucial for analyzing the circuit. The participants agree on the importance of these current directions in defining the polarities. This clarification helps in comprehending the overall circuit behavior.
PainterGuy
Messages
938
Reaction score
72
Hi, :smile:

Please have a see on the following link:
http://img840.imageshack.us/img840/1959/img0002qc.jpg

Please have a look on the Figure 3.8 in bottom right corner. What defines the polarities of v3 and v2? Is it the directions of I3 and I2? Please tell me. Thank you

Cheers
 
Physics news on Phys.org
Yes, sure it is.
The same for i2, i4.
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top