An alternating current measuring instrument have linear or non-linear scale.Why?

The alternating current can be measured with the help of

Choose correct alternative. Given a current carrying wire of non-uniform cross section. Which of the following is constant throughout the length of the wire? A. current, electric field and drift speed B. drift speed only C. current and drift speed D. current only

A metal wire of linear mass density of 9.8g//m is stretched with a tension of 10 kg-wt between two rigid support 1meter apart. The wire passes at its middle point between the poles of a permanent magnet, and it vibrates in resonance when carrying an alternating current of frequency n . the frequency n of the alternating source is

In a experiment the angle are required to be measured using an instrument. 26 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale . If the smallest division of the main scale is half -a-degree (=0.5^(@)) then the least count of the instrument is .

Which of the following equation is non-linear ?

A moving coil galvanometer of resistance G gives full scale deflection for a certain current. The shunt resistance required to convert it to measure a current n times the initial current is

Name the following : An instrument used to measure electric current.

Explain why the reactance provided by a capacitor to an alternating current decreases with increasing frequency.

Describe various methods for measurement of linear growth of stem and radicle.