To charge a lead storage battery you must
apply a direct current to it.
hold a magnet close to it.
force alternating current through it.***
increase the pressure on it.
To charge a lead storage battery, you must apply a direct current to it, not force alternating current through it.
Explanation:
1. Apply a direct current: Lead storage batteries are charged by applying a direct current (DC) to them. This can be achieved by connecting the battery to a DC power source, such as a battery charger or a regulated power supply. The direct current flows in one direction from the positive (+) terminal of the power source to the positive terminal of the battery and from the negative (-) terminal of the power source to the negative terminal of the battery. This allows the battery to accumulate and store electrical energy for later use.
2. Hold a magnet close to it: Holding a magnet close to a lead storage battery will not charge it. Magnets produce a magnetic field, which primarily affects magnetic materials like iron and other ferromagnetic substances. Since lead storage batteries operate based on the chemical reactions within the battery cells, the presence of a magnet will not have any significant effect on the charging process.
3. Force alternating current through it: Alternating current (AC) is not used to charge lead storage batteries. AC flows in both directions, constantly changing its polarity. Lead storage batteries are designed to receive and store electrical energy in the form of direct current. Charging them with alternating current can damage the battery and reduce its lifespan.
4. Increase the pressure on it: Charging a lead storage battery does not involve increasing the pressure on it. Pressure has no direct effect on the charging process. Instead, the charging process involves providing a constant and controlled flow of electrical current to the battery, enabling the chemical reactions necessary for recharging the battery's cells.
In summary, the correct method to charge a lead storage battery is by applying a direct current (DC) to it, not by forcing alternating current (AC) through it, holding a magnet close to it, or increasing the pressure on it.