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Q: How much current flows through a circuit if the resisitance is 30 ohms and there is a 90 volt battery?
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Why does a circuit stop working when you remove the battery?

The battery is the power source of the circuit. It supplies current to the circuit and the circuit is simply a path for the current to follow. When you remove the current (battery), the path still exists but there is no current going through it.


Should you connect both ends of a battery in a circuit?

it is necessary to connect both the terminals of a battery to a circuit for current to flow through it..!!


What is an complete circuit?

A circuit is complete whenever current can flow from the battery (or what is producing current), through the circuit, and back to the battery. A complete circuit could contain just a battery and one wire. An incomplete circuit could be a battery with a wire attached to just one terminal, because current cannot flow all the way through the circuit in this case (i.e. cannot flow through the battery). note: not all elements in a circuit may have current flow in a complete circuit. For instance, a light bulb may be shorted but you still have a complete circuit.


What happens when a battery is hooked up to an open circuit?

nothings because they is no wire connected to the circuit so no current can flow through


What are the circuit effects due to a short circuit or open circuit?

It would depend on the circuit diagram. In some cases, the circuit would be incomplete (simplest case is a battery with a wire attached to just one terminal).Parallel branches that have a connection to the battery without going through other branches are independent of each other. Say you have two parallel branches and a battery. If you short circuit one of the branches, the other branch will not be affected but the battery will be (current through the battery would decrease because taking out a parallel branch increases resistance).In short, it would depend on the circuit diagram. Note that for a nanosecond, there would be current in an open circuit, but after this brief time there would be no current flow in the segment of the circuit that has been shorted.

Related questions

Why does a circuit stop working when you remove the battery?

The battery is the power source of the circuit. It supplies current to the circuit and the circuit is simply a path for the current to follow. When you remove the current (battery), the path still exists but there is no current going through it.


What is current in the battery called?

A battery contains a charge of electrons. When these electrons leave the battery and travel through a circuit that is described as current.


Should you connect both ends of a battery in a circuit?

it is necessary to connect both the terminals of a battery to a circuit for current to flow through it..!!


How does resisitance affect currents?

The higher the resistance the less current can pass through therefore the current will be lower.


A resistance of 10 ohms is placed across a 9 volt battery what current flows through the battery?

No current flows through the battery. There is a current through the external circuit. I = E/R = 9/10 = 0.9 amperes.


What causes a posite current in a battery?

A electrical from a battery is the flow of elecrons through a circuit in the opposite dirrection to the current flow. This current flow also happens inside the battery between the plates.


What is an complete circuit?

A circuit is complete whenever current can flow from the battery (or what is producing current), through the circuit, and back to the battery. A complete circuit could contain just a battery and one wire. An incomplete circuit could be a battery with a wire attached to just one terminal, because current cannot flow all the way through the circuit in this case (i.e. cannot flow through the battery). note: not all elements in a circuit may have current flow in a complete circuit. For instance, a light bulb may be shorted but you still have a complete circuit.


How does an electric circuit with a battery lamp copper wire and switch work?

The battery provides the current and the energy; the lamp consumes the energy when the current goes through it; the copper wire conducts the current; and the switch lets you close or open the circuit (so that current passes, or doesn't pass, through).


A 9v battery is in a series with a 100 resistor and there is a current of 0.09 a flowing through the circuit what is used by the circuit?

0.81 APEX


If two bulbs in a series are connect to a battery and the current in the first bulb is found to be 1 ampere then what is the current through the battery?

A circuit with a 2 ohm resistor and a 4 ohm resistor in series with a 12 volt battery will have 2 amps flowing through each resistor. The current is the same in each resistor because they are in series, and a series circuit has constant current throughout.


If a battery sends a current of 10 amps through a circuit for one hour how many coulombs will flow through the circuit?

If a battery sends a current of 10A through a circuit for one hour how many coulombs will flow through the circuit?


What happens when a battery is hooked up to an open circuit?

nothings because they is no wire connected to the circuit so no current can flow through