Question

A library has 1000 books in stock. They were biographies to fiction to academic books is 4:7:9. The librarian adds 25 biographies, 50 fiction books to the library during an academic year. What us the new ratio of biographies to fiction to the academic books? ​

Answer 1

$\huge \: answer$

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The direction of magnetic field at the centre

of the circular loop depends on whether the

current in the loop flows in clockwise or

anticlockwise direction.When the current is in

clockwise direction, the magnetic field goes

into the side of wall.

when current is in clockwise direction the

direction of magnetic field (B) is towards

the circuit on the other hand when current

is in anticlockwise direction the direction of

magnetic field (B) is outwards the circuit.