Explanation

Soft iron is most suitable for transformer cores due to its high magnetic permeability and low hysteresis loss.

It allows efficient magnetic flux linkage, improving transformer performance.

Explanation

In the equation PV = nRT, R is the Universal Gas Constant, used in the ideal gas law.

Its value is 8.31 J/mol·K.

It links pressure, volume, temperature, and amount of gas.

Explanation

Light waves are electromagnetic waves that can travel through a vacuum without a medium.

They consist of oscillating electric and magnetic fields perpendicular to each other and the direction of propagation.

Explanation

Elasticity is the property of a body that enables it to return to its original shape after the deforming force is removed.

Materials like rubber show high elasticity, while clay does not.

Explanation

Capacitance depends on area of plates, distance between them, and the dielectric (medium) used.

It does not directly depend on the electric field, which is a result of the charge and voltage, not a factor in determining capacitance.

Explanation

Mica is a dielectric material that increases the capacitance when placed between capacitor plates.

It does so by reducing the electric field and allowing the capacitor to store more charge for a given voltage.

Explanation

Kirchhoff's Voltage Rule (KVL) states that the sum of potential differences (voltages) in a closed loop is zero.

This is based on the conservation of energy, as energy gained equals energy lost in a loop.

Explanation

• 1 second → Half oscillation of a seconds pendulum
• 0.1 second → Very fast oscillating system
• 2 seconds → Time period of a seconds pendulum
• 0.5 second → Faster pendulum, shorter length than seconds pendulum

Explanation

A semiconductor has electrical properties between a conductor and an insulator.

It conducts electricity under certain conditions, making it essential in electronic devices.

Explanation

In a metallic conductor, current flows due to the movement of free electrons in the conduction band.

These electrons drift under the influence of an electric field, creating electric current.