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A coil of area 100 cm2 having 500 turns carries a current of 1mA. It is suspended in a uniform magnetic field of induction 10-3 Wbm-2. Its plane makes an angle of 600 with the lines of induction. Determine the torque acting on the coil.
A swimmer swims across a 20-meter-wide river at 0.3 m/s. The river is running at 0.1 m/s. What is resultant velocity of the swimmer, and at what angle with respect to his original
A device which changes light energy into electrical energy is known as photoelectric cell. It is also known as photocell or electric eye.
A 12 Volt battery is associated across a parallel combination of two capacitors C1 and C2. The capacitance of C2 is double that of C2.
Two parallel rectangular plates measuring 20 cm by 40 cm carry an electric charge of 0.2µC. Measure the electric flux density. If the plates are spaced 5mm apart and the vo
These resistors are usually of carbon composition, carbon film on a ceramic rod and sealed in evacuated glass tube. End connections are made up of copper clad nickel-iron alloy.
Q. What are leptons? Give examples. Leptons: Leptons are lighter particles having mass equal to or less than about 207 times the mass of an electron except neutrino an
Q. Name the types of photoelectric cells? The photo electric cells are of three kinds: A) Photo emissive cell B) Photo voltaic cell and C) Photo conductive cell.
Ammeter: An electromechanical instrument which is used to calculate the amount of current flowing by an electric circuit is known as an ammeter. It is modified form of a gal
Q. State Kirchoff's second law in electricity? Kirchoff's second law (voltage law) the algebraic total of the products of resistance as well as current in each part of any
A floater to show surface tension Bend a piece of small copper wire into a ring about 8 cm in diameter. Attach two other pieces of wire rigidly to conflicting sides of the ring
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