Questions Related to NCERT

Anelectric short circuit occurs when two points in a circuit that have different electric potentials get connected directly with very little or no resistance between them.

This causes a sudden, large flow of current because the current takes the easiest path, bypassing the normal load. This can lead to overheating, damage to electrical components, or even fire if not protected by a fuse or circuit breaker.

Two magnetic field lines do not intersect each other because:

If they did, it would mean that at the point of intersection, the magnetic field has two different directions — one along each line. However, this is not possible, because the magnetic field at a point has a unique direction.

So, intersecting field lines would violate the basic property of magnetic fields — that the magnetic field vector at any point in space is well-defined and single-valued. Therefore, magnetic field lines never cross or intersect.

The energy given to each coulomb of charge passing through a 6 V battery is calculated using the formula:
Energy = Voltage × Charge

Here, the voltage is 6 V and the charge is 1 coulomb.
Energy = 6 V × 1 C = 6 Joules

So, the energy given to each coulomb of charge is 6 joules.