Question
An electric dipole of length 10 cm, when placed with its
axis making an angle of 30° with a uniform electric field, experiences a torque of 2√3 Nm. Calculate the potential energy of the dipole, if it has a charge of ±2 nC.Solution
Torque experienced at this point (τ) = 2√3Nm The angle at which the dipole is placed θ = 30° Torque on the dipole, τ = PEsinθ Potential energy of the dipole, U = −PEcos(θ) U/ τ =−{PEcos(θ)}/{PEsinθ) Since, U = −τcotθ = - 2√3 × √3 = - 6 J
A man bought an washing machine of Rs.15000 and spend Rs.2000 on its repairing and Rs.1000 for buying its new parts. After few days he vend it...
The marked price of an article is ₹600. After allowing a discount of 25% on the marked price, there was a loss of ₹30. The loss percentage is:
An article Marked price is 30% above its cost price and it is sold at a discount of 10% making a profit of Rs.850.Then, what will be the selling price o...
A shopkeeper marks an article 25% above cost price and gives a discount of 8% on marked price. If the cost price is Rs 2400, find the profit.
An item is sold with a 20% loss. If the cost price is reduced by Rs. 8 and the selling price is raised by Rs. 20, a profit of 20%...
A traveller wants to earn
A rice bag's selling price is 'x%' greater than its cost price and 'x%' less than its marked price. The gain proportion from selling the item would incr...
The ratio of the C.P. and S.P. of an article is 16 : 17. What is the Gain percent?
- A shopkeeper marked an item 50% above its cost and offered a 30% discount. If the item is sold at Rs. 3,150, then what is the profit?
An item smartphone is marked 25% above its cost price and sold for Rs. 1,500 after allowing two successive discounts of 20% and 25%, respectively. Find ...
![](https://static.ixambee.com/public/images/quesimg/SSC CHSL Tier 1/Quantitative Aptitude/Profit and loss/19568_4371584...</a></li> <li><a href="https://www.ixambee.com/questions/quantitative-aptitude/profit-and-loss/361042" class=)
Relevant for Exams:
