Question

A glass slab is placed inside a capacitor as shown. A student makes 3 diagrams for field lines corresponding to (1) electric displacement vector (2) electric field vector (3) polarization but forgets which corresponds to what.

• A. A $\to$ 1, B $\to$ 2, C $\to$ 3
• B. A $\to$ 1, B $\to$ 3, C $\to$ 2
• C. A $\to$ 3, B $\to$ 1, C $\to$ 2
• D. A $\to$ 2, B $\to$ 3, C $\to$ 1

Answer 1

The correct option is D A $\to$ 2, B $\to$ 3, C $\to$ 1

The figure A shows the electric field vector because it becomes less in the glass due to its high k value. The figure B corresponds to the direction of polarization inside the slab and figure C shows the electric displacement vector.