Whats the effective resistance in a parallel and series circuit with a cell and two 12 ohms resistors ?

What do we know about parallel circuits- Total current is equal to sum of the current in the individual branches IT = I1 + I2Component of each branch of a circuit share the same voltage as the cell V1 = V2 = VTUsing ohms law V=IR, 1/RT = 1/R1 + 1/R2 What do we know about a series circuit -Current has the same value at any point in the circuit IT = I1 = I2Emf of the cell is equal to the sum of the potential difference across each resistor V1 + V2 = VTUsing Ohm's Law V = IR, RT = R1 + R2 Draw a diagram to help us understand how current and voltage vary in circuitsCalculate effective resistance -For series 12 + 12 = 24 ohmsFor parallel 1/12 + 1/12 = 1/ R where R = 6 ohmsMake sure ans is given in correct unitsReflect on question - what was the issue? Why were you not able to ans the q? What did you forget?


Answered by Suwanja S. Physics tutor

2688 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Initially, trucks A and B are travelling in opposite directions. A has mass 1000 kg and is travelling at speed 7ms^-1. B has mass 4000kg and is travelling at speed 2ms^-1. What is their speed and direction after collision if they move together?


What is gravitational potential and how can gravitational potential energy be used to estimate the escape velocity of a planet of mass m and radius r?


How is a particle moving in circular motion accelerating but not varying speed?


What is Kirchoff's first law?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences