Electric Circuits

Front

What is voltage?

Back

Voltage is the electric potential difference between two points in a circuit, measured in volts (V). It represents the energy per unit charge available to move electrons through a circuit.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It is expressed as V = I × R.

Front

What is resistance?

Back

Resistance is a measure of the opposition to the flow of electric current in a circuit, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow. It has no breaks or interruptions.

Front

What is an open circuit?

Back

An open circuit is a broken electrical loop that prevents current from flowing. It can occur due to a switch being off or a break in the wiring.

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit in which components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit in which components are connected across common points or junctions, allowing current to flow through multiple paths.

Front

How does increasing voltage affect current in a circuit with constant resistance?

Back

If the voltage is increased while the resistance remains constant, the current will increase according to Ohm's Law (I = V/R).

Front

What is the direction of conventional current flow?

Back

The direction of conventional current flow is from the positive terminal to the negative terminal of a power source.

Front

What is the unit of electric current?

Back

The unit of electric current is the ampere (A), which measures the flow of electric charge.