What is the direction of the electric field caused by the charge at point P?
The magnitude of the electric field E produced by a charged particle at a point P is the electric force per unit positive charge it exerts on another charged particle located at that point. The direction of the electric field is the direction of that force on a positive charge.
What capacitance is needed to store 3.00 ΜC of charge at a voltage of 120 V?
The capacitance needed to store three microCoulombs of charge when 120 volts is applied can be found by taking the charge divided by the voltage. So, that’s three times ten to the minus six Coulombs divided by 120 volts is 25.0 nanofarads.
Is voltage dependent on distance?
No, voltage doesn’t depend on distance at least not in the way you’ve explained it. Voltage is a measure of the potential to force a current through a wire. In fact one volt is equal to one amp of electrons driven through one ohm. And one amp is 6.24 Quintillion (6.24 *10e18) electrons per second.
How does the separation distance affect the stored energy?
Now if the battery remains connected, the potential difference between the plates remains constant. In this case the energy is inversely proportional to the separation d between the plates hence if the distance between the plates is doubled it energy is halved.
What happens to the energy stored in a capacitor if the charge on it is doubled?
The energy stored in the capacitor is proportional to the charge squared divided by the capacitance, but the capacitance will be cut in half if the plate separation is doubled. Therefore, the energy stored will double.
What is the energy stored in a battery called?
chemical potential energy
How is energy stored in a cell or battery?
Batteries and similar devices accept, store, and release electricity on demand. Batteries use chemistry, in the form of chemical potential, to store energy, just like many other everyday energy sources. For example, logs store energy in their chemical bonds until burning converts the energy to heat.