dc fundamentals Quiz Practice Quiz | dc fundamentals

Q: What is the unit of electric current?

Ampere (A) — Current is defined as the flow of charge, measured in Amperes.

Q: Which law describes the relationship between voltage, current, and resistance?

Ohm's Law — Ohm's Law states: V = IR, relating voltage, current, and resistance.

Q: What is the equivalent resistance of two resistors in series, R1 = 10? and R2 = 20??

30 ? — In series, resistors add directly: R_total = R1 + R2.

Q: What is the formula for calculating power (P) in a DC circuit, given voltage (V) and current (I)?

P = V * I — Power is the product of voltage and current: P = VI.

Q: What is the unit of electrical resistance?

Ohm (?) — Resistance opposes current flow and is measured in Ohms.

Q: What happens to the total resistance when resistors are connected in parallel?

The total resistance decreases. — Parallel resistors always result in a lower total resistance.

Q: If a 12V battery supplies 2A of current, what is the power dissipated?

24 W — P = V * I = 12V * 2A = 24W

Q: What is Kirchhoff's Current Law (KCL) based on?

Conservation of Charge — KCL states that the total current entering a junction equals the total current leaving it, based on charge conservation.

Q: What is the relationship between voltage and current in a purely resistive DC circuit?

Voltage and current are in phase. — In a resistive circuit, voltage and current rise and fall together (in phase).

Q: Which of the following is NOT a fundamental component in a DC circuit?

Capacitor — While capacitors exist, they primarily act on AC, not DC. The rest are basic DC elements.

Question 1 of 10

What is the unit of electric current?

Current is defined as the flow of charge, measured in Amperes.

Question 2 of 10

Which law describes the relationship between voltage, current, and resistance?

Ohm's Law states: V = IR, relating voltage, current, and resistance.

Question 3 of 10

What is the equivalent resistance of two resistors in series, R1 = 10? and R2 = 20??

In series, resistors add directly: R_total = R1 + R2.

Question 4 of 10

What is the formula for calculating power (P) in a DC circuit, given voltage (V) and current (I)?

Power is the product of voltage and current: P = VI.

Question 5 of 10

What is the unit of electrical resistance?

Resistance opposes current flow and is measured in Ohms.

Question 6 of 10

What happens to the total resistance when resistors are connected in parallel?

Parallel resistors always result in a lower total resistance.

Question 7 of 10

If a 12V battery supplies 2A of current, what is the power dissipated?

P = V * I = 12V * 2A = 24W

Question 8 of 10

What is Kirchhoff's Current Law (KCL) based on?

KCL states that the total current entering a junction equals the total current leaving it, based on charge conservation.

Question 9 of 10

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

In a resistive circuit, voltage and current rise and fall together (in phase).

Question 10 of 10

Which of the following is NOT a fundamental component in a DC circuit?

While capacitors exist, they primarily act on AC, not DC. The rest are basic DC elements.

dc fundamentals Quiz