Question
A wire carrying a current of 4.0 A is shaped into a
circular arc of radius 8.0 cm. If the arc subtends an angle of 90° at the center, what is the magnitude of the magnetic field produced at the center of the arc?Solution
To find the magnetic field at the center of a circular arc carrying current, we use the formula: 
If the sum of remainders, obtained on dividing 52436 by 22 and 59461 by 73, is divided by 13, then the remainder will be:
If sets A and B contain 4 and 5 elements respectively, then the total number of binary relations from A to B is:
Kevin and Ben started a business with initial investments in the ratio of 4:5. After six months, Kevin increased his investment by 25%, and Ben increase...
The MRP of an article is Rs.1750 and the cost price of the article is 40% of its marked price. If x% of the discount offered on the marked price of the ...
Apache OpenOffice software includes which of the following components?
From a point on the ground, the angle of elevation to the top of a building is 30 degrees. If the distance between the point and the base of the buildin...
A shopkeeper mixes two types of rice, costing $30 per kg and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage pr...
HCF and LCM of two numbers are 13 and 455. If one number lies between 60 and 70, then the other number lies between
The area of four walls of a room is 140 cm2. If the length and breadth of the room were equal and the height of the room is 7 cm, then what i...
Which is not the function of the Operating System?
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