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WorksheetsELECTROMAGNETIC INDUCTION
Total questions: 15
Worksheet time: 2hrs 43mins
Which of the following gives the direction of the induced e.m.f.?
Faraday’s law
Lenz’s law
Ampere
Biot-Savart’s law.
Which of the following is/are equal to Henry?
Volt second/ampere.
Volt(second)²/coulomb.
Joule (second)²/(coulomb)²
All of these
A coil of metal wire is kept stationary in a non-uniform magnetic field:
An e.m.f. and current both are induced in the coil.
An e.m.f. but not the current is induced iii the coil.
Current but not the e.m.f is induced in the coil.
Neither e.m.f. nor current is induced in the coil.
When the rate of change of current through a closed circuit is unity, then the induced e.m.f. produced in it is equal to
Voltage
Coefficient of self induction or self inductance L.
Electric field
Current
Which of the following is most suitable for the core of electromagnets
Soft iron
Soft iron
SteelCopper-nickel alloy
Air
Identify the paramagnetic substance
Iron
Aluminium
Nickel
Hydrogen
A diamagnetic material in a magnetic field moves
From weaker to the stronger parts of the field
Perpendicular to the field
From stronger to the weaker parts of the field
In none of the above directions
A square of side L meters lies in the x-y plane in a region where the magnetic field is given by B=B0 (2i^+3j^+4k^) Testa, where B0 is constant. The magnitude of flux passing through the square is
2B0L2Wb
3B0L2Wb
4B0L2Wb
√29 B0L2Wb
There are two coils A and B as shown in figure. A current starts flowing in B as shown, when A is moved towards B and stops when A stops moving. The current in A is counter clockwise. B is kept stationary when A moves. We can infer that
there is a constant current in the clockwise direction in A.
there is a varying current in A.
there is no current in A.
there is a constant current in the counter clockwise direction in A.
The magnetic flux linked with a coil is given by an equation
ϕ=5t2+2t+3
. The induced e.m.f. in the coil at the third second will be
32 units
54 units
40 units
65 units
Straight body posture shows what?
Pride
Professionalism
Confidence
Humility
Which of the following is a positive facial expression?
Staring hard
Wrinkled forehead
Looking somewhere else
Nodding while listening
Which of these is NOT an appropriate non-verbal communication at work?
Keeping hands in pockets while talking
Talking at moderate speed
Sitting straight
Tilting head a bit to listen
When a co-worker borrows your phone charger regularly and forgets to return it to you, do you:
Drop hints at regular intervals
Let it go
Explain the effect it has on your work, and ask for it back
Get angry and demand it back
You are involved in after-hours conference calls with the US for the third time this week. You have already made alternative arrangements. Do you:
Give what you think is a cast-iron reason for not taking part
Try saying no but end up taking part
Complain that it’s the third time this week and say a definite “NO”
Say ‘no’ firmly and say when you will have to leave for your other appointment
