- #1
noops15
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1. Okay so thsi comes from Oct/Nov 05 Physics Paper 4. Question 5 b (ii) 1. The diagram shows a magnetic field into the paper and an electron moving in a straight horizontal line about to enter the field. The question asks what effect is there on the deflection of the electron if the potential difference accelerating the electron intially is reduced.
2. How should I approach this?
3. I assumed that according to F=Bqv, a decrease in v would cause a decrease in F and thus cause a smaller deflection on the electron. But the answer says otherwise because they used the Centripedal Force equation in solving this one. Why is F=Bqv not accepted?
2. How should I approach this?
3. I assumed that according to F=Bqv, a decrease in v would cause a decrease in F and thus cause a smaller deflection on the electron. But the answer says otherwise because they used the Centripedal Force equation in solving this one. Why is F=Bqv not accepted?