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Moving Charges And Magnetism

Question

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If electron velocity is $2 \hat{i} + 3 \hat{j}$ and it is subjected to magnetic field of $4 \hat{k},$ then its
path will change
speed will change
both (a) and (b)
none of the above

Solution

A.

path will change

Some More Questions From Moving Charges And Magnetism Chapter

Two moving coil meters, M₁ and M₂ have the following particulars:
R₁ = 10 Ω N₁ = 30,
A₁ = 3.6 x 10^–3 m², B₁ = 0.25 T
R₂ = 14 Ω; N₂ = 42,
A₂ = 1.8 x 10^–3 m², B₂ = 0.50 T
(The spring constants k are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M₂ and M_1.

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