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.
View all questions of this testCompute 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.