Recent content by Ling2

  1. L

    What Is the Induced EMF in the Coil?

    Assuming the solenoid is long an using that formula, my answer is wrong. Is there anything missing to the comments I added for solving this problem?
  2. L

    What Is the Induced EMF in the Coil?

    A solenoid of length 45 cm has 340 turns of radius 2.2 cm. A tightly wound coil with 16 turns of radius 4.4 cm is at the center of the solenoid. The axes of the coil and solenoid coincide. Find the emf induced in the coil if the current in the solenoid varies according to I=4.6sin(50∏t)A...
  3. L

    Let there be a PP capacitor where d increases, what happens to the charge?

    Thank you so much! Just the clarification I needed :)
  4. L

    Let there be a PP capacitor where d increases, what happens to the charge?

    If a fully charged parallel plate capacitor is disconnected from a battery and its plates are pulled apart to increase the distance between the plates, what is the value of charge on the capacitor? I know the charge and the electric field will both remain the same, but I don't know why or...
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