Current Flow in Parallel Circuits with Resistors and Batteries

The video tutorial explains how to calculate the current in parallel circuits using Ohm's Law. It begins with a simple example of a circuit with two resistors and a 12-volt battery, demonstrating how to find the current through each resistor and the total current. The tutorial then progresses to a more complex example with three resistors and a 30-volt battery, using the same principles. Finally, it covers a conceptual approach to understanding current distribution in parallel circuits and derives a formula for calculating current in such circuits.

What is the total current flowing from a 12V battery connected to two resistors of 6 ohms and 4 ohms in parallel?

• 2 Amps

• 6 Amps

• 5 Amps

• 3 Amps

In a parallel circuit with a 30V battery and resistors of 5 ohms, 6 ohms, and 10 ohms, what is the current through the 5 ohm resistor?

• 6 Amps

• 5 Amps

• 10 Amps

• 3 Amps

How much total current flows from the battery in a parallel circuit with resistors of 5 ohms, 6 ohms, and 10 ohms connected to a 30V battery?

• 11 Amps

• 12 Amps

• 14 Amps

• 13 Amps

If two resistors, 5 ohms and 10 ohms, are connected in parallel with a total current of 6 Amps, what is the current through the 5 ohm resistor?

• 5 Amps

• 2 Amps

• 3 Amps

• 4 Amps

In a parallel circuit, if the resistance of one path is halved, what happens to the current through that path?

• It triples

• It remains the same

• It halves

• It doubles

What is the formula to calculate the current through one resistor in a parallel circuit with known total current and resistances?

• I1 = (R1 + R2) / R2 * It

• I1 = R2 / R1 * It

• I1 = R2 / (R1 + R2) * It

• I1 = R1 / (R1 + R2) * It

What is the relationship between voltage across resistors in a parallel circuit?

• Voltage is double across each resistor

• Voltage is zero across each resistor

• Voltage is the same across each resistor

• Voltage is different across each resistor

How can you derive the formula for current through a resistor in a parallel circuit?

• By using the Capacitance formula

• By using Kirchhoff's Voltage Law

• By using Ohm's Law and algebraic manipulation

• By using the Power formula

In a parallel circuit, if the total current is known, how can you find the current through one of the resistors?

• By subtracting the resistance from the total current

• By multiplying the total current by the resistance

• By using the formula I1 = R2 / (R1 + R2) * It

• By dividing the total current by the number of resistors

What happens to the total current in a parallel circuit if another resistor is added in parallel?

• It increases

• It decreases

• It remains the same

• It becomes zero