# MCAT/MCAT Physics Mcq Questions Electromagnetic Induction Sample Test,Sample questions

## Question: `A 25eV electron has a speed of`

1.2 x 106m/sec

2.3 x 106m/sec

3.5 x 106m/sec

4.4 x 106m/sec

Posted Date:-2021-08-30 05:45:37

## Question: `A 5 ?F capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is`

1.2.5 x 10-8 C

2.10-5 C

3.103 C

4.4 x 103 C

Posted Date:-2021-08-30 05:45:37

## Question: `A capacitor is a perfect insulator for`

1.direct current

2.alternating current

3.both for the direct and alternating current

4.none of above

Posted Date:-2021-08-30 05:45:37

## Question: `A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy`

1.200J

2.100J

3.1000J

4.100 eV

Posted Date:-2021-08-30 05:45:37

## Question: `A dynamo converts`

1.mechanical energy into electrical energy

2.electrical energy into mechanical energy

3.magnetic energy into mechanical energy

4.magnetic energy into electrical energy

Posted Date:-2021-08-30 05:45:37

## Question: `A.C and D.C have the same`

1.effect in charging a capacitor

2.effect in charging a battery

3.effect while passing through an inductance

4.heating effect through a resistance

Posted Date:-2021-08-30 05:45:37

## Question: `A.C cannot be used for`

1.producing heat

2.producing light

3.magnetizing and electroplating

4.all the above

Posted Date:-2021-08-30 05:45:37

## Question: `An alternating current or voltage`

1.fluctuates off and on

2.varies in magnitude alone

3.changes its direction again and again

4.changes its magnitude continuously and reverses its direction of flow after regularly recurring intervals.

Posted Date:-2021-08-30 05:45:37

## Question: `capacitor is to have an energy content of 20J it must be placed across a potential difference of`

1.4 volts

2.9 volts

3.2 volts

4.1 vol

Posted Date:-2021-08-30 05:45:37

## Question: `cmf generated by A.C dynamo depends upon`

1.number of turns in the coil

2.magnetic field strength

3.frequency of rotation

4.all of above

Posted Date:-2021-08-30 05:45:37

## Question: `Current produced by moving the loop of wire across a magnetic field is called`

1.A.C current

2.D.C current

3.induced current

4.mean square current

Posted Date:-2021-08-30 05:45:37

## Question: `Electric field due to positive charged plate is E = ?/2??. If oppositely charged plate of same amount is placed parallel to it, then resultant field contains amount of energy`

1.Q/?oA

2.Q/e

3.QV2

4.Q2/C

Posted Date:-2021-08-30 05:45:37

## Question: `Electric flux due to a point charge +q is`

1.1/4II?? . q/r

2.q/??

3.1/4II?? . q/r2

4.4II??

Posted Date:-2021-08-30 05:45:37

## Question: `Electric intensity at infinite distance from the point charge is`

1.zero

2.infinite

3.positive

4.negative

Posted Date:-2021-08-30 05:45:37

## Question: `emf induced in a circuit according to Faradays law depends on the`

1.maximum magnetic flux

2.rate of change of magnetic flux

3.change in magnetic flux

4.initial magnetic flux

Posted Date:-2021-08-30 05:45:37

## Question: `Energy stored in a magnetic field is given by`

1.LI2

2.L2I/2

3.LI2/2

4.IL2

Posted Date:-2021-08-30 05:45:37

## Question: `Equipotential planes are`

1.parallel to one another

2.non parallel to one another

3.intersecting

4.circular

Posted Date:-2021-08-30 05:45:37

## Question: `Equivalent capacitance is greater than individual capacitances in`

1.series combination

2.parallel combination

3.both series and parallel combinations

4.none of above

Posted Date:-2021-08-30 05:45:37

## Question: `For electroplating we use`

1.A D.C source

2.an A.C source

3.any source

4.all of the above

Posted Date:-2021-08-30 05:45:37

## Question: `For what value of ? the electric flux has average value of those of extreme values ?`

1.60?

2.45?

3.90?

4.0?

Posted Date:-2021-08-30 05:45:37

## Question: `If a charged rod is brought closer to a gas filled balloon then`

2.Balloon bursts

4.Balloon squeezes

Posted Date:-2021-08-30 05:45:37

## Question: `If an electrons is allowed to move along the field in a non uniform electric field then it will follow`

1.Spiral path

2.Straight line

3.Curved path

4.Circular path

Posted Date:-2021-08-30 05:45:37

## Question: `If metallic conductor is charged negatively then its weight`

1.Remains same

2.First increases then decreases

3.Decreases then increases

4.Increases for a while

Posted Date:-2021-08-30 05:45:37

## Question: `If mica sheet is placed between the plates of a capacitor the capacity`

1.increases

2.decreases

3.increases then decreases

4.decreases then increases

Posted Date:-2021-08-30 05:45:37

## Question: `If the coil is wound on an iron core the flux through it will`

1.decrease

2.become zero

3.remain the same

4.increase

Posted Date:-2021-08-30 05:45:37

## Question: `If the secondary coil has Ns turns and the primary Np turns the relation between secondary and primary voltages is given by`

1.Vs/Vp = Np/Ns

2.Vs/Vp = Ns/Np

3.Vp/Vs = Ns/Np

4.Vp/Vs = Np/Ns

Posted Date:-2021-08-30 05:45:37

## Question: `If two charges are increased by two times then force`

1.Decreases 9 times

2.Increases 9 times

3.Increases 4 times

4.Decreases 4 times

Posted Date:-2021-08-30 05:45:37

## Question: `In a charged capacitor the energy resides in`

1.magnetic hield

2.electric field

3.nuclear field

4.gravitational field

Posted Date:-2021-08-30 05:45:37

## Question: `In a non-uniform electric field a polar molecule will experience`

1.Net torque

2.Net force

3.both series and parallel combinations

4.zero

Posted Date:-2021-08-30 05:45:37

## Question: `Inductors acts as a short circuit for`

1.AC

2.DC

3.Both (a) and (b)

4.none of these

Posted Date:-2021-08-30 05:45:37

## Question: `N/C =`

1.V/A

2.J/V

3.V/m

4.A/m

Posted Date:-2021-08-30 05:45:37

## Question: `Photocopier and inject printer are dealt in`

1.Electrostatics

2.Charges in motion

3.Capacitors

4.Electric fields

Posted Date:-2021-08-30 05:45:37

## Question: `Potential difference is the work done in moving unit positive charge form one point to another`

1.in the direction of electric intensity

2.against electric intensity

3.in any direction

4.in the direction of electric flux

Posted Date:-2021-08-30 05:45:37

## Question: `Power loss in actual transformer is due to`

1.Small output

2.Eddy currents and magnetic hysterias

3.Soft iron core

4.Back emf

Posted Date:-2021-08-30 05:45:37

## Question: `Selenium becomes a conductor in light so it behaves like`

1.Semiconductor

2.Photodiode

3.Light emitting diode

4.Capacitor

Posted Date:-2021-08-30 05:45:37

## Question: `Self inductance of a coil depends upon`

1.current flowing

2.number of turns per unit length

3.voltage produce

4.all

Posted Date:-2021-08-30 05:45:37

## Question: `SI unit of permitivity of free space is`

1.Nm2C2

2.N-1mC-2

3.NmC-1

4.N-1m-2C2

Posted Date:-2021-08-30 05:45:37

## Question: `The number of electrons in one coulomb charge is equal to`

1.6.2 x 1018

2.1.6 x 1019

3.6.2 x 1021

4.1.6 x 10-27

Posted Date:-2021-08-30 05:45:37

## Question: `The only difference between construction of D.C generator and A.C generator is that of`

1.carbon brushes

2.coil

3.commutator

4.magnetic field

Posted Date:-2021-08-30 05:45:37

## Question: `The practical illustration of the phenomenon of mutual induction is`

1.A.C generator

2.D.C dynamo

3.induction coil

4.transformer

Posted Date:-2021-08-30 05:45:37

## Question: `The value of the capacitance depends upon the`

1.voltage applied

2.thickness of the capacitor plates

3.geometry of the capacitor

4.dinsity of the capacitor plates

Posted Date:-2021-08-30 05:45:37

## Question: `Three capacitors C1 C2 and C3 are connected in parallel as in the Fig. The equivalent capacitance will be`

1.8?F

2.0.8?F

3.1?F

4.16?F

Posted Date:-2021-08-30 05:45:37

## Question: `Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be`

1.positively charged

2.electrically neutral

3.negatively charged

4.positively and negatively charged

Posted Date:-2021-08-30 05:45:37

## Question: `Value of ?r for various dielectrics is always`

1.less than unity

2.equal to unit

3.larger than unit

4.no hard and fast rule

Posted Date:-2021-08-30 05:45:37

## Question: `Weber is the unit of`

1.Magnetic field intensity

2.magnetic induction

3.magnetic flux

4.self-inductance

Posted Date:-2021-08-30 05:45:37

## Question: `Which of the following uses electric energy and does not convert it into any other form?`

1.transformer

2.motor

3.D.C generator

4.A.C generator

Posted Date:-2021-08-30 05:45:37

## Question: `Which of the following works on torque on the current carrying conductor placed in magnetic field.`

1.galvanometer

2.ammeter

3.voltmeter

4.all of the above

Posted Date:-2021-08-30 05:45:37

## Question: `Which one of the following can be taken as the measure of electric intensity ?`

1.F/A

2.?/A

3.???/A

4.q/??A

Posted Date:-2021-08-30 05:45:37

## Question: `Which one of the following functions like a motor?`

1.galvanometer

2.ammeter

3.voltmeter

4.all of above

Posted Date:-2021-08-30 05:45:37

## Question: `Work done in moving a point charge from one point to another point of equipotential surface is`

1.?W = 1?V

2.?W = F?r

3.zero

4.W = 1/4????V

Posted Date:-2021-08-30 05:45:37

## More MCQS

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