Physics question and answers for November 23, 2023
- Q 6 Consider a toroid of circular cross section of radius b major radius R much greater than minor radius b Find the total energy stored in toroid I is current...
- Q A flat coil with a large number N of tightly wound turns in a uniform magnetic field perpendicular to the plane of the coil as shown in the figure The...
- Q A cylindrical region of radius 1 m has instantaneous homogeneous magnetic field of 5T and it is increasing at a rate of 2T s A regular hexagonal loop ABCDEFA of...
- Q current flows from straight wire as shown in figure and it is decreasing with time The induced current in loop placed near to it A In clockwise direction B In...
- Q The circuit NOR Is equivalent to 1 OR gate 3 AND gate NAND AB Aar NOT 2 NOR gate 4 NAND gate 13
- Q A transformer is used to light a 100W and 110V lamp from a 220V mains If the main current is 0 5A the efficiency of the transformer is approximately 1...
- Q Two identical coaxial circular loops carry a current i each circulating in the same direction If the loops approach each other 1 the current in each loop will decrease 2...
- Q 14 Two inductors L and L are connected in parallel and a time varying current flows as shown The ratio of currents i i2 at any time t is 12...
- Q 15 In a coil of resistance of 10 92 the induced current developed by changing magnetic flux through it is shown in figure as a function of time The magnitude...
- Q An e m f of 15 volts is applied in a circuit containin henry inductance and 10 resistance The ratio current at time t o and t 1 sec is...
- Q 3 An electron moves on a straight line path XX as shown below A coil ABCD is kept adjacent to the path of electron What will be the direction of...
- Q A conducting circular loop of radius a and resistance R is kept on a horizontal plane A vertical time varying magnetic field B 2t is switched on at time t...
- Q U 2 10 T 1 m 50 m s 10 v 1mV Some magnetic flux is changed from a coil of resistance 10 22 As a result an induced current...
- Q angular loop of sides 10 cm and 5 cm carrying a current I of 12 A is placed in different orientations as shown in the figures below JEE Main 2015...
- Q E Two parallel conducting rails are connected to a source of emf E and internal resistance r Another conducting rod of length having negligible resistance lies at rest and can...
- Q A uniform magnetic field is restricted within a region of radius r The magnetic field changes with time dB at a rate Loop 1 of radius R r encloses the...
- Q 3 1 2 In the circuits a S2 are closed at t 0 and are kept closed for a long time The variation of currents in the two circuits for...
- Q gin the plane of paper with constant angular velocity about O then which of the following graphs shows the variation of induced current with time f The magnetic field is...
- Q The current flows from A to B as shown in the figure The direction of the 1 clockwise 2 anticlockwise 3 straight line 4 none of these A B
- Q Consider the circuit shown in figure a Find the current through the battery a long time after the S is closed b Suppose the switch is opened at t 0...
- Q 10 A conducting wire frame is placed in magnetic field which is directed into the paper The magnetic field is increasing at a constant rate The directions of induced current...
- Q the direction opposite to ting current A non conducting ring having a uniformly distributed negative charge is placed in the plane of smooth paper A uniformly decreasing inward magnetic field...
- Q 1 63 in the figure a long thin wire carrying a varying current i 1 sin mot lies at a distance y above one edge of a HoloWo Cosewt rectangular...
- Q A wire loop is rotated in a uniform magnetic field about an axis perpendicular to the field such that an EMF is induced The direction of the current induced in...
- Q If a charge particle is projected at angle 8 with direction of parallel Electric and magnetic field as shown in figure then path of particle will be q too B...
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