Practice question

In a hydraulic disc brake, the force applied at the lever is multiplied because:

  1. The brake fluid compresses
  2. The caliper piston area is larger than the master-cylinder piston area (Pascal's principle)
  3. The brake pads expand with heat
  4. The disc rotates faster than the wheel

Answer: B — The caliper piston area is larger than the master-cylinder piston area (Pascal's principle)

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