Electricity & Circuits-GL

Front

What is the formula for calculating electric power?

Back

P = VI, where P is power, V is voltage, and I is current.

Front

What does the term 'electric power' refer to?

Back

The amount of energy transferred per second.

Front

What is the relationship between voltage and current in a circuit?

Back

As voltage increases, current also increases, assuming resistance remains constant.

Front

What is the unit of electric power?

Back

Watt (W) is the unit of electric power.

Front

What is Ohm's Law?

Back

V = IR, where V is voltage, I is current, and R is resistance.

Front

If a current of 10 A flows through a resistor of 2 ohms, what is the power?

Back

200 W (P = I^2R = 10^2 * 2 = 200 W).

Front

What is a short circuit?

Back

A short circuit occurs when there is a low-resistance connection between two conductors, causing excessive current flow.

Front

What is the symbol for a switch in a circuit diagram?

Back

A switch is represented by a break in the line with a small circle or a lever symbol.

Front

What happens to current if resistance is increased while voltage remains constant?

Back

Current decreases according to Ohm's Law (I = V/R).

Front

What is the difference between AC and DC?

Back

AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.