(2596) Problem 3: Suppose you have two parallel c g plates that are separated by

Question

(2596) Problem 3: Suppose you have two parallel c g plates that are separated by 2.4 mm. 50% Part (a) What will the electric field strength between the plates be (in NC) if they have a potential difference of 5.3x 103 V? > 5096 Part (b) The electric breakdown strength for a particular medium, also called the dielectric strength, is the point at which electrons bound to the molecules of the medium begin to be stripped off due to the large electric field. How close together must the plates be with this applied voltage in order to achieve breakdown strength for air (3.0 × 106 vm) in mm? Grade Summary Potential Submissions Attempts remaining20 0% 100% cotan asinacos0 atan0 acotan0 sinh0 cosh0 tanh0cotanh0 O Degrees O Radians 4% per attempt) etailed view END Submit Hint I give up! Hints: 0% deduction per hint Hints remaining:- Feedback: 096 deduction per feedback. Expert l A, L

Explanation / Answer

Part a :

Electric field between a capacitor having potential difference V

E=V/d=(5.3×103 / 2.4×10-3) =2.208×106 N/C

Part b:

For breakdown , required strength is

Ebreakdown =3× 106 V/m

Again for a capacitor having potential difference V

Ebreakdown = V/ dbreakdown

dbreakdown = 5.3×103 / 3×106 m =1.77×10-3 m =1.77mm

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