Unit Vector
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Q. A uniform electric field of 400 V/m is directed at 45∘ above the x-axis as shown in the figure. The potential difference VA−VB is given by :
![222566_fba08df5de814fd8b327baa48412ef10.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/222566_fba08df5de814fd8b327baa48412ef10.png)
![222566_fba08df5de814fd8b327baa48412ef10.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/222566_fba08df5de814fd8b327baa48412ef10.png)
- 0
- 4 V
- 6.4 V
- 2.8 V
Q. The value of (n) for which vector−−→OA=12^i+n^j+12^k is a unit vector is
- ±1√3
- ±13
- ±12
- ±1√2
Q.
Which of these is a unit vector that makes an angle of 60∘ with the positive direction of x axis ?
−1^i−√3^j
−12^i−√32^j
1^i+√3^j
12^i+√32^j
Q.
Which of these is a unit vector that makes an angle of 60∘ with the positive direction of x axis ?
Q.
Which of these is a unit vector that makes an angle of 60∘ with the positive direction of x axis ?
−1^i−√3^j
−12^i−√32^j
1^i+√3^j
12^i+√32^j