10a Ohm's Law

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 can be expressed as V = I × R.

Front

What is the unit of resistance?

Back

The unit of resistance is Ohm (Ω).

Front

If the voltage is increased while resistance remains constant, what happens to the current?

Back

The current increases.

Front

What is the formula to calculate total resistance in a series circuit?

Back

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

Front

What happens to the current in a series circuit when more resistors are added?

Back

The current decreases as more resistors are added because the total resistance increases.

Front

What is the unit of voltage?

Back

The unit of voltage is Volts (V).

Front

What is a series circuit?

Back

A series circuit is a circuit in which the 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 circuit in which the components are connected across common points or junctions, providing multiple paths for the current.

Front

How does adding more light bulbs in a series circuit affect the brightness?

Back

Adding more light bulbs in a series circuit causes the brightness to decrease because the total resistance increases, reducing the current.

Front

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

Back

The relationship is defined by Ohm's Law: V = I × R.