QQ.1. Explain EMF and Current, Effects of Electric Current. In an electrical system what is the importance of active power and reactive power?
- (a)) Explain EMF and Current, Effects of Electric Current. (200 words)
- (b)) In an electrical system what is the importance of active power and reactive power? (200 words)
- EMF is the energy per unit charge from a source, driving current; measured in Volts.
- Electric Current is the flow rate of electric charge; measured in Amperes (I = Q/t).
- Current produces heating (I²R), magnetic fields, chemical changes, and physiological effects.
- Active Power (Watts) is consumed by loads to perform useful work (e.g., mechanical, heat, light).
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