It depends on what you mean by 'voltage'. For example, if you mean electromotive force (e.m.f.), then the internal resistance of a battery or generator will cause an internal voltage drop, resulting in the terminal voltage being lower than the open-circuit voltage and the greater the load, the lower the open-circuit voltage.
On the other hand, if you are asking 'how' do you reduce voltage, then there are various ways. For a.c. voltages, we can use a step-down transformer. For d.c. voltages, we can use a variable resistor connected as a potentiometer, or a pair of fixed-value resistors to form a voltage divider.
Using a higher voltage reduces power losses during transmission.
A high voltage like 750kV is used in transmission lines because this reduces the current in the wires for a given amount of power. A reduced current will reduce the power lost in transmission (I^2R).CommentFar more importantly than reducing line losses, it reduces the voltage drop along the line which would, otherwise, be enormous!
Shouldn't be a problem. For example the unloaded voltage on a car battery is often around 14 Volts. Under load the voltage reduces.
Reducing voltage in a circuit does not directly affect resistance. It affects current. Resistance is an independent variable.Ohm's law: voltage equals current times resistance.However, reducing voltage and/or current does reduce power, which reduces temperature, which can change resistance because resistance is usually affected to some degree by temperature.
in ac circuits power,P=VICOS@ @ is the angle between voltage and current. in dc P=VI V is the voltage I is the current. Power (in Watts) is current (A) x voltage (V)
Transformers.
it is a station which reduces high voltage to low voltage and increases current.
reduces the voltage available to the blower motor.
It reduces the voltage from 12v to 6v because the gauges run on the lower voltage.
it reduces the gain
Using a higher voltage reduces power losses during transmission.
Answer for USA, Canada and countries running a 60 Hertz supply service.A step down transform reduces the voltage to 120/240 for home use.
The speed and terminal voltage drastically reduces
The speed and terminal voltage drastically reduces
because it reduces the power dissipation
the voltage drop means whenever the conductor passing through the supply voltage, according to the resistivity property to reduces the some amount of voltage that drop is known as voltage drop for example the resistance is used to drop the voltage to the circuit.............................................
High voltage reduces the amount of energy wasted in transmission lines.