English
Tamil Nadu Board of Secondary EducationHSC Science Class 12

State Fleming’s right-hand rule. - Physics

Advertisements
Advertisements

Question

State Fleming’s right-hand rule.

Short/Brief Note
Advertisements

Solution

  1. The Thumb, index finger, and middle finger of the right hand are stretched perpendicular to each other.
  2. The index finger indicates the direction of the magnetic field.
  3. Thumb indicates the direction of motion of the conductor.
  4. The middle finger indicates the direction of induced current.
shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Electromagnetic Induction And Alternating Current - Evaluation [Page 260]

APPEARS IN

Samacheer Kalvi Physics - Volume 1 and 2 [English] Class 12 TN Board
Chapter 4 Electromagnetic Induction And Alternating Current
Evaluation | Q II. 4. | Page 260

RELATED QUESTIONS

If ‘R’ is the radius of dees and ‘B’ be the magnetic field of induction in which positive charges (q) of mass (m) escape from the cyclotron, then its maximum speed (vmax) is _______.

A) `(qR)/(Bm)`

B)`(qm)/(Br)`

C) `(qBR)/m`

D) `m/(qBR)`


 Name two devices in which electromagnets are used and two devices where permanent magnets are used.


In which of the following case does the electromagnetic induction occur?

A magnet is moved through a loop of wire .


State the condition at which we say the two coils kept close to each other are perfectly coupled with each other. 


Write the two names in the following diagram.

Right hand thumb rule.


A thin semi-circular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field B, as shown in the figure.

The potential difference developed across the ring when its speed v , is


The magnetic flux passing through a coil perpendicular to its plane is a function of time and is given by OB = (2t3 + 4t2 + 8t + 8) Wb. If the resistance of the coil is 5 Ω, determine the induced current through the coil at a time t = 3 second.


Metal rings P and Q are lying in the same plane, where current I is increasing steadily. The induced current in metal rings is shown correctly in figure.


A cylindrical bar magnet (A) and similar unmagnetized cylindrical iron bar (B) are dropped through metallic pipe. The time taken to come down by ____________.


One solenoid is centered inside another. The outer one has a length of 50.0 cm and contains 6750 coils, while the coaxial inner solenoid is 3.0 cm long and π cm2 in area and contains 150 coils. The current in the outer solenoid is changing at 3000 A/s. The emf induced in the inner solenoid is ______ V.

(Round off to two decimal places.)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×