21) An capacitor consists of two large parallel plates of area A separated by a very small distanced. This capacitor is connected to a battery and charged until its plates carry charges +Q and -Q,and then disconnected from the battery. If the separation between the plates is now doubled, thepotential difference between the plates willA) double.B) quadruple.C) be cut in half.D) be cut in fourth.E) not change.

The potential difference V between the plates of a capacitor is related to the charge Q, capacitance…

Answered: 21) An capacitor consists of two large…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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2. A capacitor is made from two square conducting plates, each 10 cm x 10 cm, at a separation of 2.0mm. (a) If air is present between the plates, calculate the capacitance. voltage (b) A potential difference-of 80 V is applied to the two plates. How much charge is on each plate? Make a sketch illustrating the charged capacitor. (c) Calculate the electric field in between the capacitor plates. Make a sketch showing field lines. wont ase about dieletricg (d) A dielectric with &,=40 is inserted between the capacitor plates, but to do so, the plate separation must be increased to 2.5 mm. How does the electric field change in this case if the potential difference is kept constant.
D) none of previous choices is true (23) Given a a plot of equipotential lines, how would you draw the electric field lines? A) Perpendicular; towards lower potential B) Parallel to all equipotential lines C) Perpendicular; towards higher potential D) Perpendicular; towards higher lines of higher energy d to 1000% and then disconnected from battery. A
2) .) Some field lines and corresponding equipotential lines are shown below. Two locations, A and B, are marked. i. The electric potential A. Is higher at A B. Is higher at B C. Is equal at A and B D. Could be higher at A or B ii. If a proton were moved from A to B, the work done on it by the electric field would be A. + B. C. 0 A
1) solve this question, as soon as possible.
25. You have two flat metal plates each of area 1.00 m², with which to construct a parallel- plate capacitor. A) If the capacitor of the device is to be 1.00 F, what must be the separation of the plates? B) Could the capacitor actually be constructed?
2) A. A small spherical object is released from rest in the center (black dot) of the below capacitor. For a positive, negative, and neutral object, explain the direction of any motion of the particle after it's released and whether the motion will be at a constant speed or will accelerate. Ignore gravity. B. Ignoring gravity, say a positively charged spherical object enters the bottom of the same capacitor as in (a) with a velocity pointed directly upwards. Draw a picture that shows the trajectory of the object inside the capacitor using solid lines. Draw a second trajectory with dashed lines to show the object's trajectory if its initial velocity was slower. Repeat these steps for a negatively charged object using a different colored pen/marker. C. An electron is launched from the bottom of the positive plate at a 45° angle to the plate. It does not have sufficient speed to make it to the negative plate. Draw a potential trajectory for the electron. Ignore gravity. +++++ +++++++
5- A storm cloud A storm cloud and the ground represent the plates of a capacitor. During a storm, the capacitor has a potential difference of 1.00 x 108 V between its plates and a load of 50.0 C. A lightning bolt releases 1.00% of the capacitor's energy to a tree on the ground. How much sap from the tree can be evaporated? Model the sap as water initially at 30.0 °C. Water has a specific heat of 4186 J/kg.°C, boiling point of 100 °C and latent heat of vaporization of 2, 26 × 106 J/kg.

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