Home
Class 12
PHYSICS
Consider Experiment II in Section 6.2. ...

Consider Experiment II in Section 6.2.
a. What would you do to obtain a large deflection of the galvanometer?
b. How would you demonstrate the presence of an induced current in the absence of a galvanometer?

Text Solution

Verified by Experts

(a) To obtain a large deflection, one or more of the following steps can be taken: (i) Use a rod made of soft iron inside the coil `C_2` , (ii) Connect the coil to a powerful battery, and (iii) Move the arrangement rapidly towards the test coil `C_1` .
(b) Replace the galvanometer by a small bulb, the kind one finds in a small torch light. The relative motion between the two coils will cause the bulb to glow and thus demonstrate the presence of an induced current.
In experimental physics one must learn to innovate. Michael Faraday who is ranked as one of the best experimentalists ever, was legendary for his innovative skills.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NCERT TAMIL|Exercise EXERCISES|10 Videos

  • ELECTROMAGNETIC INDUCTION

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|7 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT TAMIL|Exercise EXERCISES|34 Videos

  • ELECTROMAGNETIC WAVES

    NCERT TAMIL|Exercise Evaluation (Numerical problems)|5 Videos

Similar Questions

Explore conceptually related problems

Consider the potentiometer circuit arranged as in figure. The potentiometer wire is 600cm long. At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer? b) If the jockey touches the wire at a distance of 560cm from A, What will be the current in the galvanometer?

The full scale deflection current of a galvanometer of resistance 1 Omega is 5mA. How will you convert it into a voltmeter of range 5V ?

(a) In a meter bridge the balance point is found to be at 39.5cm from the end A. when the resistor S is of 12.5Omega. Determine the resistance of R. Way are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips ? (b) Determine the balance point of the bridge above if R and S are interchanged. (c ) What happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current ?

You are given a solenoid of length 'l', number of turns per unit length 'n' and area of cross-section A. When a current 'I' passes through it, a. What is the total magnetic flux through the solenoid? b. What is the self inductance of the solenoid? c. How does the value of self inductance get affected if some material of high relative permeability is filled inside the solenoid?

A galvanometer with a coil of resistance 120 ohm shows full-scale deflection for a current of 2.5 mA. How will you convert the galvanometer into an ammeter of range 0 to 7.5A? Determine the net resistance of the ammeter. When the ammeter is put in a circuit, does it read slightly less or more than the actual current in the original circuit? Justify your answer

The power of a lens is +2D. a . What do you mean by this ? b How is power related to its focal length ?

a. A closed loop is held stationary int eh magnetic field between the north and south poles of two permanent magnets held fixed. Can we hope to generate current in the loop by using very strong magnets? b. A closed loop move normal to the constant electric field between the plates of a large capacitor. Is a current induced in the loop (i) when it is wholly inside the region between the capacitor plates (ii) when it is partially outside the plates of the capacitor? The electric field is normal to the plane of the loop. c. A rectangular loop and a circular loop are moving out of a uniform magnetic field (region). (see fig.) to field-free region with a constant velocity v. In which loop do you expect the induced emf to be constant during the passage out of the field region? The field is normal to the loops. d. Predict the polarity of the capacitor in the situation described by the figure below.