All of the questions refer to the situation shown here: 12 V What is the Electri

Question

All of the questions refer to the situation shown here: 12 V What is the Electric field between the plates if d- 2mm. Draw arrows to show which way are the field lines pointed. (please show the formula and the calculation) 1. 2. If a charge (q-0.3mC) is placed between the plates, what is the force on it? 3. What is the electric potential at a point halfway between the plates? 4. What is the potential energy of the charge q if it is halfway between the plates? 5. What is the capacitance if the charge on the plates is Q-0.4mC?

Explanation / Answer

1. E= V/d= 12/0.002= 6000 N/C

Electric field directed to the left.

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2. F= qE= 0.3*10^-3* 6000= 1.8 N

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3.V'= 6000*10^-3 = 6 V

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4. U= qV'

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5= U= 0.4*10^-3*6= 2.4*10^-3 J

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Comment in case any doubt . good luck

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