WorksheetsMagnetic effect of current
Total questions: 20
Worksheet time: 12mins
The magnetic field inside a long straight solenoid carry
ing current is
Zero
decreases as we move towards its end
increases as we move towards its end
the same at all points
Which of the following property of Proton can change while it moves freely in a magnetic field?
mass
speed
velocity & momentum
momentum
A negatively charged particle projected towards west is deflected towards North by a magnetic field. The direction of magnetic field is:
Towards south
Towards East
Downward
upward
Fleming left hand rule gives the direction of:
Magnetic field
Current
Induced Current
Motion (Force)
Fleming right hand rule gives the direction of :
Force
Current
Induced current
Magnetic field
Fuse wire has high melting point. True or False:
True
False
May be false
May be correct
Which of the following is the source of direct current:
Car battery
Car alternator
Power house generator
Bicycle dinemo
A rectangular coil copper wires is rotated in a magnetic field. The direction of the induced current changes once in each:
Two revolution
One revolution
Half revolution
One-forth revolution
The magnetic field lines near a long straight wire carrying current are:
Straight lines
Concentric rings
Spiral lines
Radial lines
The device used for producing current is called a:
Galvanometer
Ammeter
Motor
Generator
Which of the following is not the source of magnetic field:
Moving charge
Electric current
Magnet
A small piece of iron
Name the device which converts mechanical energy into electric energy
Motor
Generator
Heater
Transformer
The direction of magnetic field lines inside the magnet are:
From North to south
From south to north
From North to North
From South to South
Magnetic field is maximum:
At Two Poles
At one pole
At The center of the magnet
Outside the magnet
What is the pattern of magnetic field lines at the center of a current carrying solenoid:
Concentric rings
Straight lines
Curved lines
Radial lines
What is the role of split rings in a electric moter
Convert A.C. into D.C.
Convert D.C. INTO A.C.
Reverse the direction of Current
Increases the current
Force experienced by a current carrying conductor placed in a magnetic field is
Perpendicular to its length
Perpendicular to its magnetic field
Perpendicular to its length & magnetic field
Perpendicular to its width
According to right hand thumb rule the direction of magnetic field in a current carrying straight conductor is denoted by:
Thumb
Curl fingers
Middle finger
First finger
According to right hand thumb rule the direction of magnetic field in a current carrying circular coil is denoted by
Thumb
Middle finger
Curl finger
First finger
Who discovered Magnetic Effect of Current:
Faraday
Fleming
Newton
Oersted
