One half of a semicircular ring of radius R has charge -Q while the ot

1.	One half of a semicircular ring of radius R has charge -Q while the other half has +Q. The ring is placed in the XY plane where a uniform electric field exists E=Eo^i . Find the work required to be done by an external agent to rotate the ring about the z-axis by 90 degrees in a clockwise direction.1). 2(QER)π 2). 8(QER)π 3). 4(QER)π 4). Zero
Answer» One half of a semicircular ring of radius R has charge -Q while the other half has +Q. The ring is placed in the XY plane where a uniform electric field exists $E = E_{o}^i$ . Find the work required to be done by an external agent to rotate the ring about the z-axis by 90 degrees in a clockwise direction. 1). $\frac{2 (Q E R)}{π}$ 2). $\frac{8 (Q E R)}{π}$ 3). $\frac{4 (Q E R)}{π}$ 4). Zero

One half of a semicircular ring of radius R has charge -Q while the other half has +Q. The ring is placed in the XY plane where a uniform electric field exists E=Eo^i . Find the work required to be done by an external agent to rotate the ring about the z-axis by 90 degrees in a clockwise direction.1). 2(QER)π 2). 8(QER)π 3). 4(QER)π 4). Zero

Answer»

One half of a semicircular ring of radius R has charge -Q while the other half has +Q. The ring is placed in the XY plane where a uniform electric field exists $E = E_{o}^i$ . Find the work required to be done by an external agent to rotate the ring about the z-axis by 90 degrees in a clockwise direction.

1). $\frac{2 (Q E R)}{π}$

2). $\frac{8 (Q E R)}{π}$

3). $\frac{4 (Q E R)}{π}$

4). Zero

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