Moving Charges and Magnetism questions
775 published questions with worked solutions.
- A long solenoid has 200 turns per cm and carried a current i. The magnetic field at its center is 6.28 10^ -2 Wb/m ^2. Another...
- Two identical long parallel wire carry currents 'I_1' an 'I_2' such that I_1> I_2. When the currents are in the same direction,...
- Two thin long parallel wires of same material are separated by a distance 'r'. Both carry same current 'I' in the same direction....
- A galvanometer of resistance 'G' is shunted by a resistance of 5 . To keep the main current in the circuit unchanged, the...
- A toroid has a core of inner radius 'r_1' and outer radius 'r_2', around which 'N' turns of wire are wound. If the current in the...
- A rectangular coil of effective area 0.05 m^2 is suspended freely in a radial magnetic field of 0.01 Wb/m^2. The torsional...
- The magnetic field at a point P situated at perpendicular distance 'R' from a long straight wire carrying a current of 12 A is 3...
- A galvanometer of resistance 20 gives a deflection of 5 divisions when 1 mA current flows through it. The galvanometer scale has...
- A charge 'q' moves with velocity 'v' through electric (E) as well as magnetic field (B). Then the force acting on it is
- An electron (mass m) is accelerated through a potential difference of V and then it enters in a magnetic field of induction 'B'...
- Two identical galvanometers are converted into voltmeter and millivoltmeter. As compared to the series resistance of voltmeter,...
- A current carrying loop of radius 'R' and current carrying long straight wire are placed in the same plane. I_c and I_w are the...
- A long solenoid carrying a current produces magnetic field B along its axis. If the number of turns per cm are tripled and the...
- In an ammeter, 4% of the main current is passing through the galvanometer, If shunt resistance is 5 , then resistance of...
- The magnetic induction due to an ideal solenoid is independent of
- The magnetic field intensity inside current carrying solenoid is H = 2.4 10^ 3 A m . If length and number of turns of a solenoid...
- A galvanometer has resistance 'G' and range 'V_g'. How much resistance is required to read voltage upto 'V' volte?
- Electron of mass 'm' and charge 'q' is travelling with speed 'v' along a circular path of radius 'R', at right angles to a...
- Two concentric circular coils A and B having radii 20 cm and 10 cm respectively lie in the same plane. The current in coil A is...
- A galvanometer may be converted into ammeter or a voltmeter. In which of the following cases the resistance of the device so...
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