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⚛️ Physics  ·  Current Electricity  ·  NEET & JEE

A conductor whose resistance stays constant and whose V-I graph is a straight line through the origin is described as:

Answer: ohmic.

  • A non-ohmic
  • B insulating
  • C superconducting
  • D ohmic

Correct answer: D. ohmic

Explanation: An ohmic conductor obeys V = IR with a constant R, giving a straight-line V-I graph through the origin (e.g. a metal wire at fixed temperature).

SeriesbatteryR1R2I (same in R1, R2)ParallelbatteryR1R2I1I2

In series, the same current flows through both resistors; in parallel, the current splits between branches and the voltage across each resistor is the same.

Concept context

Ohm's law, resistors, Kirchhoff's laws, Wheatstone bridge, and cells.

Read the full Current Electricity notes →