Electromagnetic Induction questions
610 published questions with worked solutions.
- A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad s^ -1 . If the horizontal...
- A rectangular wire loop of resistance 1.5 placed in a region of uniform magnetic field of magnitude 0.3 T directed normal to the...
- Energy required to establish a current of 4 A in a coil of self-inductance L = 200mH is
- A long solenoid of diameter 0.1 m has 2 10^4 turns per metre. At the centre of the solenoid, a coil of 100 turns and radius 0.01...
- A copper wire is wound on a wooden frame, whose shape is that of an equilateral triangle. If the linear dimension of each side of...
- Two identical induction coils each of inductance L joined in series are placed very close to each other such that the winding...
- The self-induced emf of a coil is 25 V. When the current in it is changed at uniform rate from 10 A to 25 A in 1 s, the change in...
- Two coils P and Q are separated by some distance. When a current of 3 A flows through coil P, a magnetic flux of 10^ -3 Wb passes...
- A coil of n turns and resistance R is connected in series with a resistance R2. The combination is moved for time t second...
- The length of solenoid is l whose windings are made of material of density D and resistivity . The winding resistance is R. The...
- Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate 10...
- Magnetic flux passing through a coil is initially 4 10^ -4 Wb. It reduces to 10% of its original value in t seconds. If the emf...
- Two coils A and B have mutual inductance 2 10^ -2 H. If the current in the primary is i=5 (10 t), then the maximum value of emf...
- Two different coils of self-inductance L_1 and L_2 are placed close to each other, so that the effective flux in one coil is...
- What will be the self-inductance of a coil of 100 turns, if a current of 5 A produces a magnetic flux 5 10^ -5 Wb ? [MHTCET 2011]
- When a current of 2 A is passed through a coil of 100 turns, flux associated with it is 5 10^ -5 Wb. Find the self-inductance of...
- The flux associated with coil changes from 1.35 Wb to 0.79 Wb within 1 10 s. Then, the charge produced by the earth coil, if...
- A helicopter rises vertically with a speed of 100 m s^ -1 . If helicopter has length 10 m and horizontal component of earth's...
- If a current of 10 A flows in 1 s through a coil and the induced emf is 10 V. Then, the self-inductance of the coil will be...
- The current in a coil of inductance 5H decrease at the rate of 2 A/s. The induced emf is [MHTCET 2014]
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