Physics · Magnetism and Electromagnetic Induction
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What is the inappropriate statement for a step-up transformer?
- A
It increases given AC voltage
- B
It decreases given alternating current
- C
Heat is never produced in step-up transformer
- D
Its output energy is always less than its input energy
This is an incorrect statement. Transformers, like any electrical device, experience losses due to factors like resistance in the wires and eddy currents in the core. These losses manifest as heat.
A step-up transformer increases given AC voltage. Therefore, this option is incorrect.
The step-up transformer decreases given the AC current. Therefore, this option is incorrect.
This is an incorrect statement. Transformers, like any electrical device, experience losses due to factors like resistance in the wires and eddy currents in the core. These losses manifest as heat.
In a real-world transformer, the output energy will always be slightly less than the input energy because of losses.
Tagged under Physics · Magnetism and Electromagnetic Induction · 2022