Turn on thread page Beta
    • Thread Starter
    Offline

    6
    ReputationRep:
    Hey!
    I'm a little stumped over this question so I would really appreciate any advice/answers!

    i)What is the ammeter reading
    ii)What is the resistance for the bulb
    iii)What is the power for the bulb and resistor
    Attached Files
  1. File Type: docx qwe.docx (142.6 KB, 15 views)
    • TSR Support Team
    Online

    21
    ReputationRep:
    TSR Support Team
    Hi there,
    I've moved your thread to the Physics forum where hopefully someone will be able to answer your question
    Offline

    6
    ReputationRep:
    Don't you need ii for i?
    • Study Helper
    Offline

    21
    ReputationRep:
    Study Helper
    (Original post by smeagol19)
    Hey!
    I'm a little stumped over this question so I would really appreciate any advice/answers!

    i)What is the ammeter reading
    ii)What is the resistance for the bulb
    iii)What is the power for the bulb and resistor
    Ohms law I = V/R

    Work out the current through the 10 Ohms resistor first.

    Current in a series path is the same at every point.

    Meaning, the current through the lamp must be the same as that flowing through the resistor.

    The voltage drops in the series path must sum to the supply voltage.

    Calculate the voltage dropped across the lamp.

    Finally using Ohms law again, calculate the lamp resistance.

    Power P = V x I
    • Thread Starter
    Offline

    6
    ReputationRep:
    Thank you so much! I think i get it now
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 13, 2018

3,382

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should universities take a stronger line on drugs?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.