Electricity & Circuits-KP

Front

What is the formula to calculate electric power?

Back

P = VI (Power = Voltage x Current)

Front

What is Ohm's Law?

Back

V = IR (Voltage = Current x Resistance)

Front

Define electric current.

Back

Electric current is the flow of electric charge, measured in Amperes (A).

Front

What is the unit of electric power?

Back

The unit of electric power is the Watt (W).

Front

How do you calculate the current drawn by an appliance?

Back

Current (I) can be calculated using the formula I = P/V (Power/Voltage).

Front

What does a switch do in a circuit?

Back

A switch controls the flow of current by opening or closing the circuit.

Front

What is the equivalent resistance in a series circuit?

Back

In a series circuit, the equivalent resistance (R_eq) is the sum of all resistances: R_eq = R1 + R2 + ... + Rn.

Front

What is the equivalent resistance in a parallel circuit?

Back

In a parallel circuit, the equivalent resistance (R_eq) is given by 1/R_eq = 1/R1 + 1/R2 + ... + 1/Rn.

Front

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

Back

Voltage (V) = Current (I) x Resistance (R).

Front

What is the definition of voltage?

Back

Voltage is the electric potential difference between two points, measured in Volts (V).