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Wire Workshop

Cut, stretch, recast or heat a wire. Predict what the ohmmeter reads.

Physics · Class 12 · Resistance of a wire · 10 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. Ohm's law: Ohm's law
  2. Cut to length: Resistance from the wire's shape
  3. Hollow tube: Only the metal carries current
  4. Stretch it: Stretching keeps the volume
  5. Stretch by a percent: A big stretch: square the factor
  6. Same mass, other radius: Same mass, same volume
  7. Iron in aluminium: Two metals side by side
  8. Tapered rod: Add up thin slices
  9. Warm the coil: Resistance grows with temperature
  10. Current at a third temperature: R is the straight line, not I