The definition of closed circuit is a system where video or other media is transmitted through connected cables and wires, not through the air. When you have a video camera directly connected to a TV on the property that shows images from the video camera, this is an example of a closed-circuit TV.

Interrupt Rating – A Circuit Breaker rated 10kA is capable of opening with a current flowing thru it of up to 10,000A. It’s the short circuit rating of breaker. 10kA means if short circuit occurs in series of the breaker and draw 10KA current it can safely bear. However this safety is for very short time.

Type II – Modified Reset Non-cycling, remains in open position while there is power to the circuit. Resets when ignition is turned off. Type II circuit breakers are typically used in applica- tions where fuse replacement is objectionable, such as power window, seat and sunroof circuits.

A closed circuit has a complete path for current to flow. This can happen when two bare wires in a circuit touch each other. The part of the circuit bypassed by the short circuit ceases to function, and a large amount of current could start to flow. This can generate a lot of heat in the wires and cause a fire.

Alternate Synonyms for “closed circuit”: loop; circuit; electrical circuit; electric circuit.

parallel circuits

The major disadvantage of parallel circuits as compared to series circuits is that the power remains at the same voltage as the voltage of a single power source. Other disadvantages include the split of an energy source across the entire circuit, and lower resistance. parallel circuits cannot be effectively used.

When batteries are hooked up In series, the voltage is increased. For example, two – 6 Volt batteries connected in series produce 12 Volts. When batteries are hooked up in parallel, the voltage remains the same, but the power (or available current) is increased. This means that the batteries would last longer.

Lighting circuit, in fact all circuits at home, should be connected in parallel. Reasons being: When one bulb is spoilt or switched off, the rest of the bulbs can still function normally at normal brightness. This is because the potential difference across each bulb in the branches remains the same.

Consider a very simple circuit consisting of four light bulbs and one 6 V battery. If a wire joins the battery to one bulb, to a second bulb, to a third bulb, then back to the battery, in one continuous loop, the bulbs are said to be in series.

Parallel circuits are used throughout your home – because they allow current to keep flowing through various paths, so it is not restricted to flow through one path.

In series, both bulbs have the same current flowing through them. The bulb with the higher resistance will have a greater voltage drop across it and therefore have a higher power dissipation and brightness. In parallel, both bulbs have the same voltage across them.

When we add a lamp in series, the resistance goes up. This reduces the current and the lamps are dimmer. However, we can make the lamps brighter again using a battery with a bigger voltage.