Ohm's Law - Remediation Flashcard

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 energy when voltage is decreased?

Back

When voltage is decreased, there is less energy available to push the electrons through the circuit.

Front

What is the formula to calculate current?

Back

The formula to calculate current is I = V / R.

Front

What is the relationship between current and electrons?

Back

If current is decreased, it means there are less electrons flowing through the circuit.

Front

How do you calculate voltage using current and resistance?

Back

Voltage can be calculated using the formula V = I * R.

Front

What is resistance?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω).

Front

What is the unit of measurement for voltage?

Back

The unit of measurement for voltage is volts (V).

Front

If a fan has a resistance of 30 ohms and uses 3 amps of current, what is the voltage?

Back

The voltage required is 90 V, calculated using V = I * R.

Front

What is the resistance of a light bulb that uses 5 amps of electricity and is plugged into a 20 volts outlet?

Back

The resistance is 4 ohms, calculated using R = V / I.

Front

What happens to the speed of electrons if current is decreased?

Back

If current is decreased, the electrons are moving slower.