Calculate the total resistance across AB; between A and B are two parallel branches, one branch with a 3 Ohm and a 5 Ohm resistor, the other branch with a 4 Ohm resistor.

1/Rt=1/R1+1/R2
R1=3+5=8
R2=4
Rt=1/(1/8+1/4)=8/3 Ohms = 2.67 Ohms (2 D.P.)

PA
Answered by Peter A. Physics tutor

4278 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

Why is the sky blue?


What's the difference between longitudinal and transverse waves?


What are the differences between sound waves and electromagnetic waves?


What is the current in a circuit?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning