(II) A + 35 pC point charge is placed 46 cm from an identical + 35 pC charge. How much work would be required to move a + 0.5 pC test charge from a point midway between them to a point 12 cm closer to either of the charges?

Step-by-step solution

Step 1 of 4</p>

Two charges q1 and q2 having equal charges of +35pC are places 46cm apart. A third qt=+0,5pC charge is placed at point A in the middle of the distance between two charges.

The third charge qt moves from point A to point B which is placed 12 cm away from the one charge.

We will find the work required to move the third charge.

Step 2 of 4 </p>

We must find the total electric potentials of the q1 and q2 at point A.

q1=35pC=35x10-12C

q2=35pC=35x10-12C

qt=0.5pC=0.5x10-12C

r1=23cm=23x10-2m

r2=23cm=23x10-2m

The total electric potential of the q1 and q2 at point A