Introduction to Magnetism

Tesla is the unit to measure ...

• Magnetic force

• Current

• Magnetic field

• Charge

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

• Charge, velocity and magnetic field

• Current, voltage and resistance

• Force charge and electric field

• Charge and magnetic field

• Current

• Length

• Magnetic field

• Charge

Magnetic field angle is not required to calculate magnetic force

• True

• False

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.

• F= 10 N

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 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)