An Ion with a Charge of +3

question 52

Multiple Choice

An ion with a charge of +3.2 *10^?19 C is in region where a uniform electric field of 5 F*10^4.V/m is perpendicular to a uniform magnetic field of 0.8 T.If its acceleration is zero then its speed must be:

• A)0 m/s
• B)1.6 * 10^-5 m/s
• C)4.0*10⁵ m/s
• D)6.3* 10⁵ m/s
• E)any value but 0 m/s

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