Use “FBI” to remember: Forefinger = Magnetic Field, Middle Finger = Current, and Thumb = Motion/Force.
Fleming’s left-hand rule states that if the thumb, forefinger, and middle finger of the left hand are extended mutually perpendicular, the forefinger represents the direction of the magnetic field, the thumb shows the motion (force), and the middle finger indicates current.
Show that the energy required to build up the current \( I \) in a coil of inductance \( L \) is \( \frac{1}{2} L I^2 \).
A circular coil of diameter 15 mm having 300 turns is placed in a magnetic field of 30 mT such that the plane of the coil is perpendicular to the direction of the magnetic field. The magnetic field is reduced uniformly to zero in 20 ms and again increased uniformly to 30 mT in 40 ms. If the EMFs induced in the two time intervals are \( e_1 \) and \( e_2 \) respectively, then the value of \( e_1 / e_2 \) is:
You are Anuradha/Ashish, residing at 45, Westwood Street, Nainital. After being inspired by a billboard advertisement for a seaside resort promoting relaxation and rejuvenation, you are interested in planning a family getaway.
Let the waves of the water drench you with the ultimate bliss of being alive ! Book a stay with us and experience the best holiday ever !
Write a letter (100–120 words) to the Resort Manager requesting details about the costs, room options, nearby attractions and available activities. Please include any additional necessary information for planning the trip.