If two identical charges are placed 1 m apart, what will be the electric field a

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Question: If two identical charges are placed 1 m apart, what will be the electric field at a point midway between them? (2019)

Options:

Correct Answer: 0 N/C

Exam Year: 2019

Solution:

The electric fields due to both charges at the midpoint will cancel each other, resulting in a net electric field of 0 N/C.

If two identical charges are placed 1 m apart, what will be the electric field at a point midway between them? (2019)

If two identical charges are placed 1 m apart, what will be the electric field at a point midway between them? (2019)

Step 1: Understand that we have two identical charges placed 1 meter apart.
Step 2: Identify the point of interest, which is the midpoint between the two charges (0.5 m from each charge).
Step 3: Recall that identical charges create electric fields that point away from each charge.
Step 4: Calculate the direction of the electric fields at the midpoint: both fields will point in opposite directions.
Step 5: Since the electric fields from both charges are equal in magnitude but opposite in direction, they will cancel each other out.
Step 6: Conclude that the net electric field at the midpoint is 0 N/C.

Electric Field – The electric field is a vector field around charged particles that exerts a force on other charges placed within the field.
Superposition Principle – The total electric field at a point is the vector sum of the electric fields due to individual charges.
Cancellation of Electric Fields – When two equal and opposite electric fields are present at a point, they can cancel each other out, resulting in a net electric field of zero.