|
If is a meter used to calculate current and is always connected in series with the 'element' through which current is to be measured.
(i) The reading of an ammeter is usually lesser than actual current in the circuit.
(ii) Smaller the resistance of an ammeter more accurate will be its measurements. An ammeter is called ideal if its resistance r is zero.
|
|
|
Conversion in galvanometer into ammeter: A galvanometer may be converted into an ammeter by connecting a low resistance (called shunt S) in parallel to the galvanometer G as shown in figure.
(a) Similar resistance of the combination
= GS/G+S
(b) G and S are parallel to each other hence both will have equal potential difference i.e. igG= ()i-igS; which gives
|
|
Required shunt 
(c) To pass nth part of main current through the galvanometer, required shunt S = G(n-1).
Email based Physics assignment help - homework help at Expertsmind
Are you searching physics expert for help with Ammeter questions? Ammeter topic is not easier to learn without external help? We at www.expertsmind.com offer finest service of Physics assignment help and physics homework help. Live tutors are available for 24x7 hours helping students in their Ammeter related problems. We provide step by step Ammeter question's answers with 100% plagiarism free content. We prepare quality content and notes for Ammeter topic under physics theory and study material. These are avail for subscribed users and they can get advantages anytime.
Why Expertsmind for assignment help
- Higher degree holder and experienced experts network
- Punctuality and responsibility of work
- Quality solution with 100% plagiarism free answers
- Time on Delivery
- Privacy of information and details
- Excellence in solving physics queries in excels and word format.
- Best tutoring assistance 24x7 hours