Explanation

The storage battery provides electrical energy through chemical reactions.

These reactions occur between the materials inside the battery.

It converting chemical energy into electrical energy.

Explanation

In electrical companies, to ensure fire safety and avoid danger, a commonly used piece of equipment is a fire extinguisher.

It is essential for quickly addressing electrical fires and preventing their spread.

Explanation

When a generator (alternator) produces more electrical energy than required, the surplus energy is used to recharge the battery. This process is called charging the battery.

Charging the battery reverses the chemical reaction that occurs during discharge, restoring the battery's state of charge and preparing it for future use.

Explanation

The quantity known as the equivalent resistance indicates the total resistance of the circuit.

It combines the effects of all resistors in the circuit into a single, overall resistance value.

Explanation

If the frequency of electricity is doubled, the efficiency of the load decreases.

This is because electrical devices and systems are designed to operate optimally at a specific frequency, and doubling it can disrupt their performance.

Explanation

Pressure exerted by the material on a smooth surface is not a factor affecting the resistance of a material.

The resistance is influenced by the type of material, temperature, and cross-sectional area.

Explanation

The ammeter is used to indicate the amount of current flowing to and from the battery.

It measures the electric current in amperes to monitor battery usage and health.

Explanation

The magnetic effect of electric current is the basis of relays, motors, and generators.

It involves generating a magnetic field that interacts with other magnetic fields to produce mechanical motion or electrical effects.

Explanation

A common method of protection in a lighting circuit is to use a fuse.

It prevents damage by disconnecting the circuit if an overload or short circuit occurs.

Explanation

In case of an electrical shock, providing oxygen is crucial.

Ensure the person is in a safe location.

Then administer CPR and seek medical help immediately.