Electric field direction between oppositely charged parallel plates

Steps:

• Identify charges: upper plate positive, lower plate negative.
• Recall electric field points from positive to negative charge.
• For parallel plates, field is uniform and perpendicular to plates.
• Direction is downward, from upper to lower plate.

Why C is correct:

• Shows uniform, straight field lines directed downward from positive to negative plate, following the definition that electric field points away from positive and toward negative charges.

Why the others are wrong:

• A: Arrows point upward, reversing the field direction from positive to negative.
• B: Field lines curve, but parallel plates produce straight, uniform fields.
• D: Field lines diverge or spread, ignoring the uniform field between infinite parallel plates.

Final answer: C