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WorksheetsKMPP H6 Magnetism (Competition)
Total questions: 45
Worksheet time: 32mins
Magnetic field lines are closest together at the __________.
poles
lines
A straight wire carrying a 9.0 A current is in a uniform magnetic field oriented at right angles to the wire. When 75 cm of wire is in the field, the force on the wire is 1.2 N. What is the strength of the magnetic field (B)?
= 0.18 N
= 0.18 T
= 0.18 Cm
= 0.18
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗
Looking at the field lines in this picture, these two magnets are ________
Attracting
Repelling
Attracting and Repelling
Doing nothing
What does the thumb indicate in flemings left hand rule?
Force
Motion
Current
Magnetic field direction
Magnetic field is a scalar quantity.
True
False
Refer the diagram. A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is:
Directed to the right
Directed to the left
Equal to the magnetic field
n the same direction as the magnetic field
The radius of the circular path of a charged particle of mass m, velocity v, in a magnetic field of strength B is given by the formula:
r = Bqv/m
r = qvm/B
r = Bq/mv
r = mv/Bq
A current-carrying wire is placed perpendicular to the page. Determine the direction of the electric current from the direction of the magnetic field as shown below.
Into the page.
Out of the page.
Clockwise.
Counter-clockwise.
A bar magnet is divided in two pieces. Which of the following statements is true?
The bar magnet is demagnetized.
The magnetic field of each separated piece becomes stronger.
The magnetic poles are separated.
Two new bar magnets are created.
A vertical wire carries an electric current into the page as shown below. What is the direction of the magnetic field at point P located to the south from the wire?
WEST
NORTH
EAST
SOUTH
A vertical wire carries an electric current into the page as shown below. What is the direction of the magnetic field at point P located to the west from the wire?
WEST
NORTH
EAST
SOUTH
A positive charge moving with a constant velocity v enters a region of a uniform magnetic field pointing out of the page as shown below. What is the direction of the magnetic force on the charge?
Left.
Right.
To the bottom of the page.
To the top of the page
A negative charge moving with a constant velocity v enters a region of a uniform magnetic field pointing out of the page as shown below. What is the direction of the magnetic force on the charge?
Left.
Right.
To the bottom of the page.
To the top of the page
What is the direction of the magnetic force on the current?
Left.
Right.
To the bottom of the page
To the top of the page
A current of 4.0 A is flowing in the frame in the direction indicated. A magnetic field of 6.5 T is directed in a direction perpendicular to SR. Calculate the magnitude of the force on PS side.
0N
1N
2.6N
3.6N
A current of 4.0 A is flowing in the frame in the direction indicated. A magnetic field of 6.5 T is directed in a direction perpendicular to SR. Calculate the magnitude of the force on SR side.
0N
1N
2.6N
3.6N
Calculate force per unit length experienced by the wires
2x10-5 Nm-1
4x10-5 Nm-1
1.1x10-5 Nm-1
8x10-5 Nm-1
Find Torque, if given N=2, I=5A, Area, A= 10mm2, B=3T
0 Nm
10 Nm
100 Nm
1000 Nm
Find Torque, if given N=2, I=5A, Area, A= 10mm2, B=3T
3 Nm
30 Nm
300 Nm
3x10-4 Nm
The diagram show the direction of magnetic field,B and velocity,v.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
right
into the page
upward
The diagram show the direction of magnetic field,B and velocity,v of an electron.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
right
into the page
out from the page
The diagram show the direction of magnetic field,B and velocity,v.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
right
into the page
upward
The diagram show the direction of magnetic field,B and velocity,v.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
into
no force produced
upward
The diagram show the direction of magnetic field,B and velocity,v.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
into
right
upward
The diagram show the direction of magnetic field,B and velocity,v.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
downward
right
upward
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
downward
right
upward
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
left
downward
into the page
out from the page
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
upward
downward
into the page
out from the page
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
no force produced
downward
into the page
out from the page
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
no force produced
right
into the page
out from the page
The diagram show the direction of magnetic field,B and current, I.
By using Fleming left hand rules, determine the direction of Magnetic force, F.
no force produced
right
downward
out from the page
Wire1 and Wire2 are same current with opposite direction. Find the direction of resultant Magnetic field on point A, which is midpoint between wire1 and wire2.
Into the page
Out from the page
Left
Upward
Wire1 and Wire2 are same current with opposite direction. Find the direction of resultant Magnetic field on point B
Into the page
Out from the page
Left
Upward
Wire1 and Wire2 are same current with opposite direction. Find the direction of resultant Magnetic field on point C, which is midpoint between wire1 and wire2.
Into the page
Out from the page
Left
Upward
