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Compute the power consumed by a material with current density 15 units in an area of 100 units. The potential measured across the material is 20V.
  • a)
    100kJ
  • b)
    250kJ
  • c)
    30kJ
  • d)
    15kJ
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Compute the power consumed by a material with current density 15 units...
Answer: c
Explanation: Power is given by, P= V X I, where I = J X A is the current.
Thus power P = V X J X A = 20 X 15 X 100 = 30,000 joule = 30kJ.
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Most Upvoted Answer
Compute the power consumed by a material with current density 15 units...
Given data:
Current density = 15 units
Area = 100 units
Potential difference = 20V

Formula:
Power (P) = Current density (J) x Area (A) x Potential difference (V)

Calculation:
Given Current density (J) = 15 units
Area (A) = 100 units
Potential difference (V) = 20V
Plugging in the values:
Power (P) = 15 x 100 x 20 = 30,000 units
Therefore, the power consumed by the material is 30,000 units, which is equivalent to 30 kJ (kilojoules).
Therefore, the correct answer is option C) 30 kJ.
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