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MUF0122 Physics Unit 2 - Semester 1, 2025
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A step-up transformer
If the secondary voltage is larger than the primary voltage, the transformer is called a
A transformer is designed to convert a voltage from 240 V a.c. 12 V a.c., and has 4000 turns on its primary coil. If it is 100% efficient, and the current in the secondary coil was 0.4 A, then the current in the primary coil should be
In Faraday’s Law equation , which part represents Lenz's Law?
Whenever magnetic flux linked with a coil changes, induced EMF in circuit will change
Direction of induced emf in a circuit is in accordance with law of
The induced voltage will oppose the flux producing it. State True/False.
Lenz devised a rule to find out direction of
Doubling the time a loop of wire takes to rotate in an electrical generator produces what effect on the induced EMF, assuming all other factors remain constant?
EMF stands for