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GUJCET · Physics · Moving Charges and Magnetism
If velocity of an electron is \((2 \hat{i}+3 \hat{j}) ms ^{-1}\) and it enters in the magnetic field of \(4 \hat{k} T\), then _________.
- A it will move in the opposite direction to the magnetic field.
- B it will move in the direction of the magnetic field.
- C its speed will change.
- D direction of its velocity will change.
Answer & Solution
Correct Answer
(D) direction of its velocity will change.
Step-by-step Solution
Detailed explanation
D
Here, \(\vec{v}=2 \hat{i}+3 \hat{j} ms^{-1}\) and \(\overrightarrow{ B }=4 \dot{k} T\)
Thus \(\vec{u} \perp \vec{B}\)
Hence direction of its velocity will change.
Here, \(\vec{v}=2 \hat{i}+3 \hat{j} ms^{-1}\) and \(\overrightarrow{ B }=4 \dot{k} T\)
Thus \(\vec{u} \perp \vec{B}\)
Hence direction of its velocity will change.
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