- 1(current)
Q. No.A vertical wire carries a current in an upward direction. An electron beam sent horizontally towards the wire will be deflected:
1. towards right
2. towards left
3. upwards
4. downwards
Subtopic: Â Biot-Savart Law |
Level 3: 35%-60%
Hints
A moving charge produces:
1. electric field only
2. magnetic field only
3. both of them
4. none of them
Subtopic: Â Biot-Savart Law |
 89%
Level 1: 80%+
Hints
A current element \(i\overrightarrow{dl}\) is placed at position \(\vec r\) from the origin. What is the magnetic field \(\overrightarrow{dB}\) at the origin due to this current element?
| (A) | \(\dfrac{\mu_{0} i_{}{}}{4 \pi} \dfrac{\overrightarrow{dl} \times \vec{r}}{r^{3}}\) | (B) | \(-\dfrac{\mu_{0} i_{}{}}{4 \pi} \dfrac{\vec{r} \times\overrightarrow{dl} }{r^{3}}\) |
| (C) | \(\dfrac{\mu_{0} i_{}{}}{4 \pi} \dfrac{\vec{r} \times\overrightarrow{dl} }{r^{3}}\) | (D) | \(-\dfrac{\mu_{0} i_{}{}}{4 \pi} \dfrac{\overrightarrow{dl} \times \vec{r}}{r^{3}}\) |
Choose the correct option from the given ones:
| 1. | (A) and (B) only | 2. | (B) and (C) only |
| 3. | (C) and (D) only | 4. | (A) and (D) only |
Subtopic: Â Biot-Savart Law |
Level 4: Below 35%
Hints
- 1(current)
Q. No.
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