Calculating resistors in Parallel and Series

What is Ohm's Law and how is it expressed mathematically?

• R = V - I

• I = V + R

• Ohm's Law is expressed as V = I * R.

• V = R / I

Calculate the current flowing through a resistor of 10 ohms with a voltage of 20 volts applied.

• 2 amps

• 1 amp

• 5 amps

• 10 amps

What is the formula for calculating equivalent resistance in a series circuit?

• R_eq = R₁ - R₂ - R₃ - ... - R_n

• R_eq = 1/(1/R₁ + 1/R₂ + 1/R₃ + ... + 1/R_n)

• R_eq = R₁ * R₂ * R₃ * ... * R_n

• R_eq = R₁ + R₂ + R₃ + ... + R_n

If three resistors of 5 ohms, 10 ohms, and 15 ohms are connected in series, what is the total resistance?

• 30 ohms

• 35 ohms

• 25 ohms

• 20 ohms

Explain how to calculate equivalent resistance in a parallel circuit.

• R_eq = 1 / (1/R1 + 1/R2 + 1/R3 + ... + 1/Rn)

• R_eq = R1 + R2 + R3 + ... + Rn

• R_eq = R1 * R2 * R3 * ... * Rn

• R_eq = (R1 + R2 + R3 + ... + Rn) / n

What is the equivalent resistance of two resistors, 6 ohms and 12 ohms, connected in parallel?

• 2 ohms

• 6 ohms

• 12 ohms

• 4 ohms

Define power in the context of electrical resistors.

• Power is the total energy stored in a resistor.

• Power is the maximum voltage across a resistor.

• Power is the rate of energy conversion in electrical resistors, calculated as P = I²* R or P = V² / R.

• Power is the resistance multiplied by current.

How do you calculate the power dissipated by a resistor using Ohm's Law?

• P = R / I²

• P = V / I

• P = I * R

• P = I² * R or P = V² / R

If a resistor has a current of 2 A flowing through it and a voltage of 12 V, what is the power consumed?

• 24 W

• 6 W

• 18 W

• 30 W

What happens to the total resistance in a series circuit if more resistors are added?

• The total resistance increases.

• The total resistance decreases.

• The total resistance remains the same.

• The total resistance fluctuates randomly.