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Electromagnetic Induction Set 4
Results
#1.
1 henry
1VAs-1
1VAs-1
1Vs A-1
1Vs A-1
1VmA-1
1VmA-1
1VAm-1
1VAm-1
#2.
. If velocity of a conductor moving through a magnetic field B is made zero, then motional emf is:
VBL
VBL
–V/BL
–V/BL
–BL/V
–BL/V
Zero
Zero
#3.
If we make the magnetic field stronger, the value of induced current is:
Decreased
Decreased
Increased
Increased
Vanished
Vanished
Kept constant
Kept constant
#4.
Energy stored in an inductor is:
½ LI2
½ LI2
½ LI
½ LI
½ L2I2
½ L2I2
½ LI
½ LI
#5.
A generator converts mechanical energy into
Chemical energy
Chemical energy
Light energy
Light energy
Heat energy
Heat energy
Electrical energy
Electrical energy
#6.
When a loop of wire is moved across a magnetic field, the current is produced in it is called
Eddy current
Eddy current
Direct current
Direct current
Photo electric current
Photo electric current
Induced current
Induced current
#7.
If we increase the resistance of the circuit containing a coil, the induced e.m.f. will be
Increase
Increase
Decrease
Decrease
Remain same
Remain same
None
None
#8.
If fingers of right hand show the direction of magnetic field and palm shows the direction of force, then thumb points for:
Torque
Torque
Voltage
Voltage
Current
Current
Induced emf
Induced emf
#9.
The self-inductance may be defined by
L= -ε / (ΔI/ΔT)
L= -ε / (ΔI/ΔT)
L= - (ΔΙ/Δt)/ E
L= - (ΔΙ/Δt)/ E
L=-E/ (Δφ/ Δt)
L=-E/ (Δφ/ Δt)
L= E/ (Δφ/ Δt)
L= E/ (Δφ/ Δt)
#10.
Induced electric current can be explained using which law
Gauss's law
Gauss's law
Faraday's law
Faraday's law
Ohm's law
Ohm's law
Ampere law
Ampere law
Finish
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