What is the voltage of a circuit without resistance?

Note: Voltage is connected in parallel to zero resistance. Then voltage across resistance is zero.

What happens to voltage when resistance is zero?

In the context of any two terminals of a circuit: A short circuit implies that the two terminals are externally connected with resistance R=0 , the same as an ideal wire. This means there is zero voltage difference for any current value.

Can there be no resistance in a circuit?

Definition. A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. In an ‘ideal’ short circuit, this means there is no resistance and thus no voltage drop across the connection. In real circuits, the result is a connection with almost no resistance.

Why are resistors needed in a circuit?

Resistors ensure components receive the proper voltage by creating a voltage drop, and they can protect a component from voltage spikes. Each component in an electrical circuit, like a light or a switch, requires a specific voltage.

What does it mean when resistance is 0?

A circuit with no resistance (0) would indicate a complete circuit, or one that has no short. A circuit with total resistance would indicate a completely open circuit — one through which no current was able to pass.

Can a resistor have 0 voltage?

The definition of a resister is that v=Ri. So if there is zero current, then there is zero voltage. However, a real physical resister has junctions and physical extent. There may be an opposing voltage in the resister caused by thermocouples or magnetic inductance.

What would happen without a resistor in a circuit?

If there really were no resistance in the circuit, the electrons would go around the circuit, and arrive back at the beginning of the circuit with as much energy as the potential difference (the voltage). That final energy is usually what is dissipated as heat or other types of energy by the circuit.

How can there be voltage but no current?

There can be voltage without a current; for instance if you have a single charge, that charge induces a voltage in space, even if it’s empty. Voltage, in the most physical way, is a scalar field that determines the potential energy per unit charge at every point in space.