Consider two separate systems, each with four charges of magnitude q arranged in

Question

Consider two separate systems, each with four charges of magnitude q arranged in a square of length L as shown above. Points a and c are in the center of their squares while points b and d are half way between the lower two charges. Complete the following statements.

Figure 1 Figure 2 +q +q Consider two separate systems, each with four Charges of magnitude g arranged in a sguare of length Las shown above. Points a and C are in the center of their squares while points b and d are half way between the lower two charges. Complete the following statements. The electric potential at d is a The electric potential at b is a The electric potential at a is The electric potential at c is

Explanation / Answer

a)

The electric potential at point d is non zero because the potential from the positive charges is greater than the potential from the negative charges since the positive charges are closer.

b)

The electric potential at point b is zero as the positive and negative charges nearest b cancel out and also with other two charges.

c)

The electric potential at a is non zero as the upper two charges provide a lesser field that cancels out part of the field moving along the bottom charges from right to left

d)

The electric potential at c is zero as it lies on the equipotential line.

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