10th Class Physics Chapter Wise Online MCQ Test With Answers PDF English Medium

Physics 10th Class English Medium Online Test

Sr. #	Questions	Answers Choice
1	If current is flowing from bottom end to the top end in a wire, according to right hand rule the direction of line of forces would be:	Anti-clock wise Clock wise Left and Right Along the conductor.
2	The number of lines of force in a magnetic field depends upon.	Shape of coil Sixe of coil Magnet Strength of field
3	Transformer Works on the principle of:	Self induction Mutual induction Electro statatic Induction
4	Iron core is used in tranformer to:	Enhance the flux Decrease the flux Keep flux the same botha a and b
5	A transformer has Np =100 and Ns =500 , if 6 volt D.C is applied across its primary, the induced voltage.	0 V 30 V 45 V 60 V
6	The turn ratios of a transformer is 10. It means.	I<sub>s</sub> = 10I<sub>p</sub> N<sub>s</sub> = N<sub>p</sub> N<sub>s</sub> = 10 N<sub>p</sub> V<sub>s</sub> =V<sub>p</sub> /10
7	The step-up transformer	Increases the input current Increase the input voltage Has more turns in the primary Has less turns in hte secondary coil
8	The direction of induced e.m.f. in a circuit is in accordance with conservation of.	Mass Charge Momentum Energy
9	Which part of a D.C. motor reverses the direction of current through the coil every half-cycle.	The armature The commutator The burshes The slip rings
10	D.C. motor converts.	Mechanical energy into electrical energy Mechanical energy into chemical energy Electrical energy into mechanical energy Electrical energy into chemical energy
11	If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire.	Increases Decreases Remains the same Will be zero
12	The presence of a magnetic field can be detected by a	small mass Stationary positive charge Stationary negative charge Magnetic compass

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