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NCAT - Practice Test - Physics - Electromagnetic Induction - Quiz 10

Practice 10 high yield MCQs on Physics from Chapter Electromagnetic Induction for Practice Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 10 of the series.

91. The efficiency of a transformer is:



92. An ideal transformer has efficiency:



93. In a transformer, the power is transferred from primary to secondary through:



94. The induced EMF in a stationary coil with varying current in a nearby coil is an example of:



95. The induced EMF in a coil due to its own changing current is called:



96. A current of 5 A in a coil produces a magnetic flux of 0.2 Wb through the coil. The self-inductance is:



97. If the current in a coil changes from 2 A to 6 A in 0.1 s, and the induced EMF is 8 V, the self-inductance is:



98. The energy stored in a 2 H inductor carrying a current of 3 A is:



99. The mutual inductance between two coils is 0.5 H. If the current in the primary changes at 10 A/s, the induced EMF in the secondary is:



100. The SI unit of mutual inductance is:



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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