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WorksheetsChapter 4: Magnetic field
Total questions: 15
Worksheet time: 9mins
The SI unit of magnetic field is
Weber, Wb
Gauss, G
Tesla, T
Farad, F
Why does a compass needle point north?
Because it is being attracted to the Magnetic South Pole
Because north is up
Because it is being attracted to the Magnetic North Pole
Because north is down
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
A wire connected to a circuit and coiled into many spiral loops is known as a _____________.
Induced magnet
solenoid
magnetic moment
forced electric field
A solenoid with 500 turns, 0.10 m long, carrying a current of 4.0 A and with a radius of 10-2 m will have what strength magnetic field at its center?
31 x 10 – 4 T
62 x 10 – 4 T
125 x 10 – 4 T
250 x 10 – 4 T
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
In the same direction as the magnetic field
What does the direction of the pointing fingers mean in this picture?
the direction of the voltage
the rotation of the wire
the direction of the magnetic field
the direction of the current
A beam of electrons travels at 6.0×106 m/s through a uniform magnetic field of 6.5×10−1 T at right angles to the field. How strong is the force acting on each electron?
= 6.25×10−13 N
= 2.65×10−13 N
= −6.25×10−10 N
= 2.655×10−10 M
A 75 cm of straight wire carrying a 9.0 A current is in a uniform magnetic field oriented at right angles to the wire. The force acting on it is 1.2 N. What is the strength of the magnetic field (B)? HINT: F=I.L.B
= 0.18 N
= 0.18 T
= 0.18 Cm
= 0.18
Magnetic force on a conductor carrying a current = 1.32 N, current = 4 A, length = 3.88 m, magnetic flux density = ?
0.0851 T
1.17 T
0.317 T
0.106 T
A wire has a current travelling through towards the left. If it is in a magnetic field directed downward, what direction will the wire experience a force?
Up
down
out of page
into page
