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Two types of capacitor-grade aluminum metallized polypropylene film were studied to investigate the factors that affect specific action integral and energy dissipation in the electrical explosion of a film, a phenomenon that occurs when a film is exposed to a high-density current pulse on the order of 107 - 108 A/cm2. The factors studied include film cross-sectional area, film length, film sheet resistance, and discharge circuit inductance. All film samples were subjected to a 2.5-kV capacitive discharge. The basic principles of the exploding-film phenomenon and the detailed effects of the stated factors are discussed.