Resistance, length and area: R = ρl/Aप्रतिरोध, लंबाई और क्षेत्रफल: R = ρl/AResistance, length and area: R = ρl/A

NCERT Fig 3.2 · Class 12 Physics · Chapter 3 · interactive diagram

Parts and what they mean

• Slab of length l, area A (लंबाई l, क्षेत्रफल A की पट्टिका) — Resistance R.
• Two slabs end to end (दो पट्टिकाएँ सिरे-से-सिरा) — Same current through both, voltages add: R ∝ l.
• Two slabs side by side (दो पट्टिकाएँ साथ-साथ) — Same voltage, currents add: R ∝ 1/A.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 3.2. Report a mistake