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Problem
Problem
The acceleration of an electron at a certain moment in a magnetic field
B
=
2
i
^
+
3
j
^
+
4
k
^
\mathbf{B} = 2\hat{i} + 3\hat{j} + 4\hat{k}
B
=
2
i
^
+
3
j
^
+
4
k
^
is
a
=
x
i
^
+
j
^
−
k
^
\mathbf{a} = x\hat{i} + \hat{j} - \hat{k}
a
=
x
i
^
+
j
^
−
k
^
. The value of
x
x
x
is (a) 0.5 (b) 1 (c) 2.5 (d) 1.5
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