Home
Class 12
PHYSICS
In a moving coil galvanometer is based o...

In a moving coil galvanometer is based on the

A

heating effect of current

B

magnetic effect of current

C

chemical effect of current

D

Peltier effect of current

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question "In a moving coil galvanometer is based on the," we will analyze the principles behind the operation of a moving coil galvanometer step by step. ### Step-by-Step Solution: 1. **Understanding the Galvanometer**: A moving coil galvanometer is an instrument used to measure small electric currents. It consists of a coil of wire that is free to rotate in a magnetic field. **Hint**: Remember that a galvanometer is specifically designed to detect and measure current. 2. **Principle of Operation**: The working principle of a moving coil galvanometer is based on the magnetic effect of electric current. When an electric current passes through the coil, it generates a magnetic field around it. **Hint**: Consider how electric current interacts with magnetic fields. 3. **Magnetic Field Interaction**: The coil is placed in a uniform magnetic field. According to the right-hand rule, the direction of the magnetic field interacts with the magnetic field created by the current in the coil. **Hint**: Visualize the right-hand rule to understand the direction of forces acting on the coil. 4. **Torque Generation**: The interaction between the magnetic field and the magnetic field of the coil produces a torque on the coil. This torque causes the coil to rotate. **Hint**: Think about how torque is related to rotation and how it can cause movement in the galvanometer. 5. **Deflection of the Needle**: The rotation of the coil is translated into a deflection of the galvanometer's needle, which indicates the magnitude and direction of the current flowing through the coil. **Hint**: Relate the movement of the coil to the movement of the needle on the scale of the galvanometer. 6. **Conclusion**: Therefore, the moving coil galvanometer operates on the principle of the magnetic effect of current, where a current-carrying coil in a magnetic field experiences a torque that causes it to rotate, leading to a deflection in the needle. **Hint**: Summarize the entire process to reinforce your understanding of how the galvanometer measures current. ### Final Answer: The moving coil galvanometer is based on the magnetic effect of current.

To answer the question "In a moving coil galvanometer is based on the," we will analyze the principles behind the operation of a moving coil galvanometer step by step. ### Step-by-Step Solution: 1. **Understanding the Galvanometer**: A moving coil galvanometer is an instrument used to measure small electric currents. It consists of a coil of wire that is free to rotate in a magnetic field. **Hint**: Remember that a galvanometer is specifically designed to detect and measure current. ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Multiple Correct|25 Videos
  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Assertion -reasoning|8 Videos
  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Subjective|10 Videos
  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Concept Based|8 Videos
  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS ENGLISH|Exercise True and False|3 Videos

Similar Questions

Explore conceptually related problems

(A) : Working of a moving coil galvanometer is based on heating effect of current. (R) : On heating, the coil starts to rotate in moving coil galvanometer because fo torque.

In a moving coil galvanometer, torque on the coil can be experessed as tau = ki , where i is current through the wire and k is constant . The rectangular coil of the galvanometer having number of turns N , area A and moment of interia I is placed in magnetic field B . Find (a) k in terms of given parameters N,I,A andB (b) the torsion constant of the spring , if a current i_(0) produces a deflection of (pi)//(2) in the coil . (c) the maximum angle through which the coil is deflected, if charge Q is passed through the coil almost instaneously. ( ignore the daming in mechinal oscillations).

In a moving coil galvanometer, torque on the coil can be experessed as tau = ki , where i is current through the wire and k is constant . The rectangular coil of the galvanometer having number of turns N , area A and moment of interia I is placed in magnetic field B . Find (a) k in terms of given parameters N,I,A andB (b) the torsion constant of the spring , if a current i_(0) produces a deflection of (pi)//(2) in the coil . (c) the maximum angle through which the coil is deflected, if charge Q is passed through the coil almost instaneously. ( ignore the daming in mechinal oscillations).

The deflection in moving coil galvanometer is reduced to half when it is shunted with a 40 Omega coil . The resistance of the galvanometer is

The best method to increase the sensitivity of a moving coil galvanometer is to increase the

In an attempt to increases the current sensitivity of a moving coil galvanometer, it is found that its resistance becomes double while the current sensitivity increases by 10%. The voltage sensitivity of the galvanometer changes by

The deflection in a moving coil galvanometer is

In a moving coil galvanometer, what is meant by a radial magnetic field ?

The phosphor bronze strip is used in a moving coil galvanometer because

State how a moving coil galvanometer can be converted into an ammeter.