CURRENT AND VOLTAGE IN CIRCUIT

Front

What is electric current?

Back

Electric current is the flow of electric charge, typically measured in amperes (A). It represents the rate at which charge flows through a conductor.

Front

What is voltage?

Back

Voltage, also known as electric potential difference, is the measure of electric potential energy per unit charge, measured in volts (V). It indicates the force that pushes electric charges through a circuit.

Front

What is the formula to calculate electric current?

Back

The formula to calculate electric current (I) is I = Q/t, where Q is the charge in coulombs and t is the time in seconds.

Front

How do you calculate the total charge that passes through a circuit?

Back

Total charge (Q) can be calculated using the formula Q = I × t, where I is the current in amperes and t is the time in seconds.

Front

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

Back

According to Ohm's Law, the relationship is defined as V = I × R, where V is voltage, I is current, and R is resistance in ohms.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is the unit of electric current?

Back

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

Front

What is the unit of voltage?

Back

The unit of voltage is the volt (V).

Front

What is the unit of resistance?

Back

The unit of resistance is the ohm (Ω).

Front

If a light bulb has a current of 5A, how much charge flows through it in 1.5 minutes?

Back

450C (Charge = Current × Time = 5A × 90s = 450C).