Electrical Engineering All Engineering Career

A closed switch ideally has a zero resistance, allowing current to flow through it without any obstruction.

Bulbs in street lighting are typically connected in parallel.

It becomes more difficult to remove electrons from an atom as you progress from removing the first electron to subsequent electrons. Therefore, it becomes more difficult to remove the third electron from the orbit compared to the first or second.

In a series circuit with unequal resistances, the highest resistance has the highest voltage drop.

Two resistors are said to be connected in series when the same current passes in turn through both.

Specific resistance of a substance is measured in ohm-meter (Ω·m).

When one leg of a parallel circuit is opened out, the total current will decrease.

Conductance is to mho (ohm spelled backward) as resistance is to ohm. So, the analogy is:

Conductance : mho :: Resistance : ohm

To boil the water in the electric kettle in a shorter time, the length of the heating element should be increased. This increase in length would result in a higher power output, allowing the water to heat up more quickly.

Varistors are non-linear resistors. They are semiconductor devices whose resistance varies with the applied voltage, typically used for surge protection in electrical circuits.