To minimize the heating effect in the transmission lines:
Correct answer: C. High voltage and low current is used
- A. High current and low voltage is used
- B. Same voltage and current is used
- C. High voltage and low current is used
- D. High voltage and high current is used
Explanation
The explanation is: In a step up transformer when the voltage across the secondary is raised, the value of current is reduced. This is the principle behind its use in the electric supply networks. Power loss by heating effect is "l2R" and is reduced by decreasing the current.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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