Question

Question 1.

Part A. What is the correct sketch of the two plates and the region between them, showing the distribution of positive charge on the bottom plate and electric field lines between the two plates with the correct direction of the field?

Part B. Where is the electric field strongest?

	A.At the border of the picture, farther from the high point.
	B.The electric field has the same intensity all over the picture.
	C.In the center of the picture, near the high point.
	D.It is impossible to say without knowing the numerical value of the charge.

Part C. Explain why it is more dangerous to be on top of a hill or mountain during a lightning storm than on level ground.

Drag the terms on the left to the appropriate blanks on the right to complete the sentences.

Question 2:

A parallel-plate capacitor is constructed of two horizontal 12.0-cm-diameter circular plates. A 1.0 g plastic bead, with a charge of -5.6 nC is suspended between the two plates by the force of the electric field between them.

Part A.

Which plate, the upper or the lower, is positively charged?

	A. Lower.
	B. Upper.
	C. It is impossible to tell.

Part B

What is the charge on the positive plate?

Express your answer to two significant figures and include the appropriate units.

Answer 1

Part A: correct Sketch of the two plates and the region between them, showing the distribution of positive charge on the bottom plate and electric field lines between the two plates with the correct direction of the field is sketch D. Part B: The field is stronger at the highest point of the bottom conductor. The correct answer is option C Part C: From the figure it is clear the field is strongest at the high point of the bottom of the conductor. So this is the place where the air is mostly likely to break down and become conducting and allow the opposite charges to rush toward each other creating a lightening.