is the electric field at the center of the page stronger for the two point charges or for the parallel plate capacitor

A capacitor stores a separation of charge. To separate the charges on a capacitor, you have to move charges against where the E field wants to push them (the oppositely charges on the two plates are attracted and want to move together), so charging takes work. That work becomes stored energy -- just like carrying water up a hill so that you can let it roll down at a later time and turn a generator. The total amount of energy stored in a capacitor is ½|Q||ΔV|. We'll use this to determine the amount of energy stored in a cell membrane.In discussion, we found that a cell membrane maintains a potential difference of about 70 mV (0.07 V) between the inside and outside of the membrane. We also found that a 1 μm by 1 μm section of the membrane has a capacitance of about 1.75  10-15 F.1. What is the magnitude of charge on one side of the 1 μm by 1 μm section of the membrane?____ C2. What is the energy stored in the 1 μm by 1 μm section of the membrane?____ J3. For a cell with a radius of 10…

Your classmate in physics says that the electric field at the center of a dipole composed of equal magnitude charges is zero and thus so must the voltage be zero at that point. Is your classmate correct? Justify your answer.

An air-filled capacitor is charged, and then a dielectric is inserted. As a result, there is an induced charge on the dielectric. What is the difference between induced charge and free charge? Option 1: Induced charge is the charge that resides on the surface of the dielectric, while free charge is the charge that is free to move within the dielectric. Option 2: Induced charge is the charge that is created by the electric field of the capacitor, while free charge is the charge that is already present in the dielectric. Option 3: Induced charge is the charge that is attracted to the oppositely charged plates of the capacitor, while free charge is the charge that is repelled by the plates. Option 4: There is no difference between induced charge and free charge.