In a step-down transformer, the current in the primary coil is _ than that in the secondary coil.
Correct answer: D. Less
- A. None of these
- B. More
- C. Equal
- D. Less
Explanation
In a step-down transformer, the voltage in the primary coil is higher than in the secondary coil; the final voltage is reduced. Since current and voltage are inversely related, the current in the primary coil will be less as compared to the current in the secondary coil.
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Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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