# Chapter 4: Electromagnetism Physics Mcqs for High School - Grade 10

Q.  The number of coils in a transformer is

a. 2
b. 3
c. 4
d. 5

ANSWER: See Answer

No explanation is available for this question!
 MCQs:  The loop in magnetic field rotates due to Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If the coil is placed perpendicular to field lines then the number of lines passing through the coil is Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If a transformer is used to supply voltage to a 15 V model train which draws a current of 0.7 A. If the voltage of the A.C source is 210 V, the current in the primary should be Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If the AC source is 240 V and a transformer supplies 12 V to a model train which draws a current of 0.8 A then primary current is Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  The phenomenon of induction of induced current in one coil due to change of current in a neighboring coil is called Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If we increase the number of loops, the turning effect would Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  A coil of wire consisting of many loops is known as Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  As per Michael Faraday, if the forefinger points the direction of the magnetic field, the middle finger in the direction of the current, then the thumb would indicate the direction of Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If the current in one coil becomes steady then magnetic field lines become Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  At the generating station, the AC voltage is Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  The type of temporary magnet, which is created when current flows through a coil is called an Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  An ideal transformer dissipates by itself Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  If we grip the coil with our right hand by curling our fingers in the direction of the conventional current, our thumb will indicate the coil's Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  The power is transmitted over long distances at high voltage to minimize the Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  Through a conductor, an electric current produces a Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  The direction of induced Electromotive force (EMF) in a circuit is under the law of conservation of Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  The direction of induced current in a circuit is always such that it opposes the cause that produces it. This law was introduced by Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  By reducing the current through the cable, power loss in the form of heat dissipation can be Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  A practical application of mutual induction is called Category: Physics MCQs,   Published by: T-Code Scripts MCQs:  Transformers are used to Category: Physics MCQs,   Published by: T-Code Scripts