So, if Jimmy adds a resistor in parallel to a circuit with two other resistors

Thread starter pebbles
Start date May 19, 2008
Tags

Circuit Parallel Resistor Resistors

Click For Summary

Adding a resistor in parallel to a circuit with two other resistors will indeed decrease the overall resistance of the circuit. This occurs because parallel resistors provide multiple pathways for current, reducing the total resistance. The equivalent resistance can be calculated using the formula for parallel resistors, which shows that the total resistance is always less than the smallest individual resistor in the circuit. Understanding this principle is crucial for analyzing circuit behavior. Therefore, the addition of a parallel resistor effectively enhances current flow in the circuit.

May 19, 2008

pebbles

So, if Jimmy adds a resistor in parallel to a circuit with two other resistors...

Homework Statement

wouldn't the resistance decrease?

Homework Equations

The Attempt at a Solution

Physics news on Phys.org

May 19, 2008

Dick

Science Advisor

Homework Helper

Uh, yes? But why do you think so?

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

View full post »