Electricity

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 the unit of voltage?

Back

The unit of voltage is the Volt (V).

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).

Front

What is the relationship between voltage, current, and resistance?

Back

According to Ohm's Law, the relationship is defined by the formula V = I × R, where V is voltage, I is current, and R is resistance.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across the same voltage source, allowing multiple paths for current to flow.

Front

What is the unit of current?

Back

The unit of current is the Ampere (A), commonly referred to as Amp.

Front

What happens to the total resistance in a series circuit?

Back

In a series circuit, the total resistance is the sum of the individual resistances: R_total = R1 + R2 + R3 + ...

Front

What happens to the total resistance in a parallel circuit?

Back

In a parallel circuit, the total resistance can be calculated using the formula: 1/R_total = 1/R1 + 1/R2 + 1/R3 + ...

Front

What is the direction of conventional current flow?

Back

Conventional current flows from the positive terminal to the negative terminal of a power source.

Front

What is the role of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit, providing resistance.