Question # 1

When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is:

Choose an answer

The same as direction of field

Opposite the direction of field

Makes an angle of 45^owith the current

At right angle to both the field and the current.

The refractive index of ice is:

Choose an answer

1.00

1.33

1.31

2.42

The speed of light in water is:

Choose an answer

2.0x10³ ms^-1

2.5x10³ ms^-1

2.3x10⁸ ms^-1

2.3x10^-8 ms^-1

If the change of current in a circuit induces a current in another circuit, this phenomena is known as:

Choose an answer

Self induction

Mutual induction

Electromagnetic induction

None mutual induction

A.C generator works on the principle of:

Choose an answer

Electrostatic induction

Electromagnetic induction

Law of gravitation

Third law of motion

The lines will be in the form of concentric circles, if conductor is:

Choose an answer

Circular

Straight

Solenoid

None of these

In D.C.motor split rings are made of:

Choose an answer

Steel

Carbon

Copper

Iron

The presence of a magnetic field can be detected by a

Choose an answer

small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

D.C. motor converts.

Choose an answer

Mechanical energy into electrical energy

Mechanical energy into chemical energy

Electrical energy into mechanical energy

Electrical energy into chemical energy

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire.

Choose an answer

Increases

Decreases

Remains the same

Will be zero

In A.C. generator flux will be zero if coil is to the field.

Choose an answer

90^o

45^o

Parallel

Inclined

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

Choose an answer

Mass

Charge

Momentum

Energy

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer