Resistors and Ohm's Law Video Lessons

Video Thumbnail

Concept

Video Thumbnail

Concept

Video Thumbnail

Example

Problem: A certain ammeter has a resistance of 2.5 x 10-3 Ω on a scale which reads up to 2.5 A, and contains a 12-Ω galvanometer. What is the sensitivity of the galvanometer, in microamperes.IG = ?

FREE Expert Solution

Galvanometer current sensitivity and ammeter are related by:

IGr=IR

92% (357 ratings)
View Complete Written Solution
Problem Details

A certain ammeter has a resistance of 2.5 x 10-3 Ω on a scale which reads up to 2.5 A, and contains a 12-Ω galvanometer. What is the sensitivity of the galvanometer, in microamperes.

IG = ?

Learn this topic by watchingResistors and Ohm's Law Concept Videos
All Physics Practice Problems Resistors and Ohm's Law Practice Problems
Q.What is the equivalent resistance between points a and b in the figure(Figure 1) ? Figure is 31.22 in picture.
Q.R=ρL/A,  where L is the length and A is the cross-sectional area of the wire. From the wire in question 4, the length of the wire is 10m, the cross-se...
Q.What is the net resistance of the circuit connected to the battery in (Figure 1) ?Express your answer in terms of R.
Q.Determine the magnitude of the current in the (a) 8.0- and (b) 2.0-? resistors in the drawing.
See all problems in Resistors and Ohm's Law

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Resistors and Ohm's Law concept. You can view video lessons to learn Resistors and Ohm's Law. Or if you need more Resistors and Ohm's Law practice, you can also practice Resistors and Ohm's Law practice problems.