Physics 10th Class English Medium Unit 6 Online Test With Answers

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Physics 10th Class English Medium Unit 6 Online Test

Sr. # Questions Answers Choice
1 When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is: The same as direction of field Opposite the direction of field Makes an angle of 45<sup>o</sup>with the current At right angle to both the field and the current.
2 The shape of magnetic lines of force in case of a straight current carrying conductor is: Eliptical Trangular Rectangular Circular
3 If the change of current in a circuit induces a current in another circuit, this phenomena is known as: Self induction Mutual induction Electromagnetic induction None mutual induction
4 In A.C. generator flux will be zero if coil is to the field. 90<sup>o</sup> 45<sup>o</sup> Parallel Inclined
5 Transformer which increase voltage is called. Step-up transformer Step down transformer D.C.Moter A.C.genrator
6 The voltage is decreased by: Step-up transformer Step-down transformer A.C. generator D.C. Motor
7 Which device has two coils, primary and secondary? D.C. Motor Transformer A.C. genrator a and b
8 Which type of energy is converted into mechanical energy in the D.C. Motor. Magnetic energy Heat energy Electrical energy Chemical energy
9 When did Michael Faraday discover Electromagnetic induction? 1841 1831 1821 1811
10 Who discovered Electromagnetic induction? Michael Faraday Flemiing Ohm Coulomb
11 In D.C.motor split rings are made of: Steel Carbon Copper Iron
12 The force on a current carrying conductor is maximum if angle between field and conductor is: 0<sup>o</sup> 90<sup>o</sup> 180<sup>o</sup> 45<sup>o</sup>
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