Understanding Electrical Concepts

Front

What is the formula for Ohm's Law?

Back

V = I * R

Front

Define voltage and its unit of measurement.

Back

Voltage is the electric potential difference measured in volts (V).

Front

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

Back

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

Front

Explain the difference between series and parallel circuits.

Back

Series circuits have a single path for current, while parallel circuits have multiple paths.

Front

How do you calculate total resistance in a series circuit? Options: R_total = R1 / R2 / R3 / ... / Rn, R_total = R1 + R2 + R3 + ... + Rn, R_total = R1 * R2 * R3 * ... * Rn, R_total = R1 - R2 - R3 - ... - Rn

Back

R_total = R1 + R2 + R3 + ... + Rn

Front

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

Back

P = V × I

Front

Describe the concept of energy in the context of electrical systems.

Back

Energy in electrical systems is the capacity to do work through the movement of electric charge.

Front

What is an ideal voltage source?

Back

A theoretical device that provides a constant voltage with zero internal resistance.

Front

How does a practical voltage source differ from an ideal one?

Back

A practical voltage source has internal resistance, causing voltage drop under load, unlike an ideal source which maintains constant voltage.

Front

State Kirchhoff's Voltage Law.

Back

The sum of the voltages around any closed loop in a circuit is equal to zero.