Question 2

A proton moves with a speed of 1.0 * 10^5 m/s throudh the Earth's magnetic field, which has a value of 55 microT at a particular location. When the proton moves eastward, the magnetic force acting on it is a maximum; and when it moves northward, no magnetic force acts on it. What is the strenth of the magnetic force, and what is the direction of the magnetic field ?

• A. 8.8 * 10^(-19)N, north or south
• B. 8.8 * 10^(-19)N, east or west
• C. 17.6 * 10^(-19)N, north
• D. 17.6 * 10^(-19)N, south
• E. 5.5 N, north or south
• F. 5.5 N, west

Formula Sheet

Question 1

Question 3

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