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Introduction to Magnetism

Total questions: 7

Worksheet time: 7mins

Name
Class
Date
1.

Tesla is the unit to measure ...

a)

Magnetic force

b)

Current

c)

Magnetic field

d)

Charge

2.

What are the variables required to get magnetic force in a moving charge?

a)

Charge, velocity and magnetic field

b)

Current, voltage and resistance

c)

Force charge and electric field

d)

Charge and magnetic field

3.

In the Magnetic Force formula F=ILBsinθF=ILB\sin\theta  , II  is...

a)

Current

b)

Length

c)

Magnetic field

d)

Charge

4.

Magnetic field angle is not required to calculate magnetic force

a)

True

b)

False

5.

A proton (q=+5x10-19C) is injected from right to left into a field B of 0.5 T directed toward the upper side of a sheet of paper. If the velocity of the proton is of 4x106m/s, find the magnitude of the magnetic force over the proton.

a)

F= 10 N

b)

F=1012 NF=10^{12}\ N

c)

F=1×1012 NF=1\times10^{-12}\ N

d)

F=1x1012 TF=1x10^{-12}\ T

6.

A wire 30 cm long conducts a current of 3 A perpendicular to the direction of a magnetic field B=0.5T. Find the magnetic force in Newtons over the wire. (Write only number, First 2 decimal places, No units)

(a)  

7.

A wire 50 cm long conducts a current of 2A forming an angle of 35° to the north of a magnetic field directed toward east. Find the magnitude of the magnetic field in Teslas, so that a force of 17N can be exerted over the wire. (Write only number, First 2 decimal places, No units)

(a)