What happens if a resistor has infinite resistance?

When the resistance is infinite, the current is zero for any finite voltage because dividing a finite number by infinity yields zero.) Thus, in a circuit where the current would have to move through air in order to “complete the circuit,” the circuit is said to contain an open or to be an open circuit.

Why the internal resistance of an ideal current source is infinite?

Current always takes the path of least resistance. Thus, in order for current to go to the path of least resistance, we must set up the source and load so that the source has much higher resistance than the load. This is why we construct the ideal current source to have infinite internal resistance.

What happens if you increase the resistance in a series circuit?

As the number of resistors in a series circuit increases, the overall resistance increases and the current in the circuit decreases.

Can ideal voltage sources be connected in series?

Ideal voltage sources can be connected together in both parallel or series the same as for any circuit element.

Is infinite current possible?

5 Answers. In a superconductor, the current can keep flowing “forever” since there is no resistance. But since conductors have inductance (in fact, superconductors are used most often to create magnets like for an MRI scanner), applying a voltage would not (immediately) cause an infinite current to flow.

Does a current source have infinite resistance?

We have seen that an ideal constant current source can supply the same amount of current indefinitely regardless of the voltage across its terminals, thus making it an independent source. This therefore implies that the current source has an infinite internal resistance, (R = ∞).

What happens to the total resistance in a network when more resistors are added to a series circuit to a parallel circuit?

As more and more resistors are added in parallel to a circuit, the equivalent resistance of the circuit decreases and the total current of the circuit increases.

What would happen to the resistance current and voltage if you connected two or more resistors in series and in parallel?

When resistors are connected in parallel, more current flows from the source than would flow for any of them individually, so the total resistance is lower. Each resistor in parallel has the same full voltage of the source applied to it, but divide the total current amongst them.

What happens when a voltage and current sources are connected in series?

In a series circuit, the current flows through all the elements is the same. Thus, any element connected in series with an ideal current source is redundant and it is equivalent to an ideal current source only. In a parallel circuit, the voltage across all the elements is the same.

What is the internal resistance of a practical current source?

A practical current source consists of a 3A ideal current source which has an internal resistance of 500 Ohms. With no-load attached, calculate the current sources open-circuit terminal voltage and the no-load power absorbed by the internal resistor. 1.

What happens to resistance when resistors are connected in parallel?

When resistors are connected in parallel, more current flows from the source than would flow for any of them individually, so the total resistance is lower. Analysis of a Parallel Circuit Three resistors and are connected in parallel. The parallel connection is attached to a voltage source. (a) What is the equivalent resistance?

Do resistors in series get the voltage from the source?

Individual resistors in series do not get the total source voltage, but divide it. The total potential drop across a series configuration of resistors is equal to the sum of the potential drops across each resistor. (Figure) shows resistors in parallel, wired to a voltage source.

What is the relationship between voltage and current in a circuit?

In (Figure), the current coming from the voltage source flows through each resistor, so the current through each resistor is the same. The current through the circuit depends on the voltage supplied by the voltage source and the resistance of the resistors.