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 happens to current if voltage increases while resistance remains constant?

Back

The current will increase.

Front

Define resistance in the context of electrical circuits.

Back

Resistance is the ability of a material to reduce the flow of electrons, measured in Ohms (Ω).

Front

What is the formula to calculate resistance using voltage and current?

Back

Resistance (R) can be calculated using the formula R = V / I, where V is voltage and I is current.

Front

How do you calculate the voltage needed to produce a specific current through a resistor?

Back

Voltage can be calculated using the formula V = I × R, where I is the current in Amps and R is the resistance in Ohms.

Front

If a 6 Ohm resistor has a current of 8 Amps flowing through it, what is the voltage across the resistor?

Back

The voltage across the resistor would be 48 volts, calculated using V = I × R (V = 8 A × 6 Ω).

Front

What types of electric charges attract each other?

Back

Positive and negative charges attract each other.

Front

What is the unit of measurement for resistance?

Back

The unit of measurement for resistance is Ohms (Ω).

Front

What is the relationship between voltage, current, and resistance in an electrical circuit?

Back

The relationship is defined by Ohm's Law: V = I × R, meaning voltage is the product of current and resistance.

Front

What happens to current if resistance increases while voltage remains constant?

Back

The current will decrease.