How much current is there if there is no resistance?

If you don’t do this, then the answer is in principle very simple, “an infinite current flows over the wire.” That’s simply what the equations demand, because V=IR, in order to model R=0 with V≠0, needs I=∞.

What will happen when battery is connected to capacitor?

A capacitor, when connected to a battery, conducts for awhile but short while after that it acts as an open circuit. The flow of current from the battery stops as soon as the charge Q on the positive plate reaches the value Q = C × V.

What is the voltage drop across the resistance when capacitor is fully charged why?

Fully Charged:When the capacitor is fully charged, the current stops flowing, the voltage drop across the resistor is zero, and the voltage drop across the capacitor is equal to the supply voltage.

Does voltage pass through a capacitor?

Applying DC voltage on the capacitor no conduction current flows through the capacitor if its insulating medium is perfect insulator. On the other side ,If a time varying voltage is applied on the capacitor, a displacement current passes through the capacitor irrespective of the insulating medium.

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.

Can you have 0 resistance?

It is impossible that resistance becomes zero because every conductor has his own resistance value.

When a capacitor is connected to a DC battery?

When an ideal capacitor is charged by dc battery, no current flows, However, When an ac source is used, the current flows continuously.

What is the voltage across a fully charged capacitor?

The charging current stops flowing and the capacitor is said to be “fully-charged”. Then, Vc = Vs = 12v. Once the capacitor is “fully-charged” in theory it will maintain its state of voltage charge even when the supply voltage has been disconnected as they act as a sort of temporary storage device.

What is voltage drop across capacitor?

The voltage drop across a capacitor is proportional to its charge, and it is uncharged at the beginning; whereas the voltage across the resistor is proportinal to the current and there is a current at the start. With less current, the rate at which charge goes onto the capacitor decreases.

What is the relation between current and voltage in a capacitor?

To put this relationship between voltage and current in a capacitor in calculus terms, the current through a capacitor is the derivative of the voltage across the capacitor with respect to time. Or, stated in simpler terms, a capacitor’s current is directly proportional to how quickly the voltage across it is changing.

What is the voltage across the capacitor a long time after the switch is closed?

Answers: The initial capacitor voltage is zero. Before the switch is closed, the charge Q on the capacitor is zero and the voltage across the capacitor = V = Q/C = 0. Right after the switch is closed, the charge has not had time to build up on the capacitor and the charge and voltage are still zero.

What happens when you connect a capacitor and a battery together?

Connect the two in parallel, then the voltages will equalize and the battery and capacitor will have the same voltage but the means by which the charge is stored differs because of the nature of the construction between the two.

What does it mean when a capacitor says 9 volts?

If you measured the voltage of a 9V battery supply, you would notice that it reads above 9 volts when it’s new and has full life. If you used an exact 9-volt rated capacitor, it would be exposed to a higher voltage than the maximum specified voltage (the voltage rating).

What does the voltage rating on a capacitor mean?

The voltage rating on a capacitor is the maximum amount of voltage that a capacitor can safely be exposed to and can store. The only difference is a capacitor discharges its voltage much quicker than a battery, but it’s the same concept in how they both supply voltage to a circuit.

What is the polarity of capacitor and battery?

The Polarity of Capacitor and Battery: The polarity of the electronic circuit must be opposite while charging a battery, while it must be same as it should be while utilizing if there should be an occurrence of a capacitor. A battery keeps up a steady voltage flow over the terminals and it is discharged just when the voltage goes down.