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An electric heater of resistance $6 \,ohm$ is run for $10$ minutes on a $120\, volt$ line. The energy liberated in this period of time is
  • A$7.2 \times {10^3}\,J$
  • B$14.4 \times {10^5}\,J$
  • C$43.2 \times {10^4}\,J$
  • D$28.8 \times {10^4}J$
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