Tag Archive: direction

Sep 17

CBSE Physics MCQ for quick revision – Mechanics

  • If the object is in equilibrium, the sum of all the forces acting on the object is zero.
    1. Inertia
    2. Force
    3. Mechanical Equilibrium
    4. Equilibrium rule

A push or a pull on an

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Sep 15

Why direct currents aren’t used in Home circuits?

How can an alternating current change its direction while moving in a wire or any conductor? Why direct currents aren’t used in Home circuits? RAHUL ASKED Answer: Alternating current is produced by rotating a coil in a strong magnetic field (or ...

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Sep 14

Jaz posted this question from electrostatics

“I’ve tried so many times, but I’m unable to arrive at the correct equation; See attachment for question” Question   Jaz posted this question E=k(2λ/r) due to positive wire E’=k(2λ/(D-r)) due to negative wire The r...

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Sep 13

More problems coming in; Try to answer now!

Stuti posted these: a particle is thrown with  any velocity vertically upward. the distance traveled by particle in last sec of ascent is 1)g 2)g/2 3)g/4 4)cant be calculated a ball is dropped from a bridge of 122.5 metre above a river. after ball h...

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Sep 12

Homework from vectors

A man walks 10 km towards west and then 12 km (60 degree_ direction of North-East. find the resultant vectors, magnitude and direction. A man walks 10 km towards west and then 15 km towards south. Find the resultant vectors, magnitude and direction. Ju...

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Sep 10

Direction of magnetic field due to a current carrying conductor

“How do we know the direction of magnetic field around the current carrying conductor?” Asked Nikhil Incoming search terms:direction of magnetic field around a current carrying conductorDIRECTION OF MAGNETIC FIELD IN CURRENT CARRYING CONDUCTORmagne...

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Sep 02

Why gravitational force of attraction is necessary for a satellite to revolve around earth?

The question was posted by Raj Kumar. The satellite has a velocity. To revolve around, the direction of velocity must change. In the absence of a force it can move only in a straight line. It is the gravitational force which helps the satellite top change direction and revolve around the earth. In other words, for a [...]

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