Electric circuits MOY Assessment

Front

What is potential difference in an electric circuit?

Back

The potential difference, or voltage, is the amount of energy per unit charge available to move electric charges through a circuit. It is measured in volts (V).

Front

How do you calculate voltage in a circuit?

Back

Voltage (V) can be calculated using Ohm's Law: V = I × R, where I is the current in amperes (A) and R is the resistance in ohms (Ω).

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 in an electric circuit?

Back

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

Front

What is an insulator?

Back

An insulator is a material that does not allow electric charges to flow through it easily, preventing the flow of current.

Front

What is the unit of electric current?

Back

The unit of electric current is the ampere (A).

Front

What is electromotive force (EMF)?

Back

Electromotive force (EMF) is the energy provided per coulomb of charge by a source, often referred to as voltage.

Front

How do you calculate resistance in a circuit?

Back

Resistance (R) can be calculated using Ohm's Law: R = V / I, where V is the voltage in volts (V) and I is the current in amperes (A).

Front

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

Back

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

Front

What is the formula for calculating power in an electric circuit?

Back

Power (P) can be calculated using the formula: P = V × I, where P is power in watts (W), V is voltage in volts (V), and I is current in amperes (A).