Physics question and answers for November 22, 2023
- Q G As shown in the figure a magnet is moved with a fast speed towards a coil at rest Due to this induced e m f induced current and induced...
- Q 4 0 2x A conductor lies along the Z axis at 1 5 Z 15 m and carries a fixed current of 10 0 A in a direction as shown...
- Q A coil in the shape of square is placed in a variable magnetic field which varies at the rate of dB dt as shown in figure The magnitude of emf...
- Q A non conducting ring of radius R having uniformly distributed charge Q starts rotating about x x axis passing through diameter with an angular acceleration as shown in the figure...
- Q 225 A conducting movable rod AB lies across the frictionless parallel conducting rails in a uniform magnetic field B whose magnitude at t 0 is B The rod AB is...
- Q of Two uncharged identical capacitors A and B capacitanc inductor of inductance L are arranged as shown in the adjacent figure At t 0 the switch S is closed while...
- Q rectangular coil of single turn having area A rotates in a uniform magnetic field B with angular speed w about an axis perpendicular to the field If initially the plane...
- Q lamps and two coils is connected to a dc source figure consisting of three identical D The ohmic resistance of the coils is negligible After some time switch S is...
- Q A rod of mass m and resistance r is placed on fixed resistanceless smooth conducting rails closed by a resistance R and it is projected with an initial velocity u...
- Q A conducting rod of length 2 is rotating with constant angular speed o about its perpendicular bisector A uniform magnetic field exists parallel to the axis of rotation The emf...
- Q 259 A square shaped wire frame carries a current i The edge of the frame is L The magnetic flux through the infinite region to the left of line AB...
- Q 36 A transformer has 500 primary turns and 10 secondary turns If the secondary has resistive load of 15 22 the currents in the primary and secondary respectively are 1...
- Q Two inductor coils of self inductance L 10 H and L 20 H are placed as shown in the figure The mutual inductance of the coil is 3 H The...
- Q An ideal DC source of emf E is an uncharged capacitor and inductor If switch is closed at t 0 what is the maximum charge om the capacitor in subsequent...
- Q A conducting square frame of side a and a long straight wire carrying current are located in the same plane as shown in the figure The frame moves to the...
- Q A dip needle is in the plane of magnetic meridian shows 30 Now it is rotated by an angle 30 then new dip angle will be tan 3 tan 3IN...
- Q 15 If given arrangement is moving towards left with speed v then potential difference between B and D and current in the loop are respectively X X X B 1...
- Q 32 A particle of charge q mass m moving with velocity vo 1 enters a region of uniform magnetic field B Find displacement of particle for any arbitrary time t...
- Q An unloaded bus can be stopped by applying brakes on straight road after covering a distance x Suppose the passenger add 50 of its weight as the load and the...
- Q 23 A wire of length 1 m is moving at perpendicular to its length and a homogeneous magnetic field of 0 5 T The ends of the wire are joined...
- Q Illustration 4 A coil is placed in a constant magnetic field The magnetic field is parallel to the plane of the coil as shown in figure Find the emf induced...
- Q 1 100 2 50 Two identical coaxial circular loops carry a current in each circulating in the same direction If the loops approach each other 1 Current in each will...
- Q 5 In the figure the steady state current through the inductor will be 5v V 1 2 A 3 1 25 A 4Q wwwww voo 19 3 mH 2 1...
- Q A metallic cylindrical rod PQ of resistance R slides without friction on a rectangular circuit composed of perfectly conducting wires fixed on inclined plane as shown in the figure A...
- Q 1 A bar magnet is released from rest along the axis of a very long vertical copper tube After some time the magnet di 1 Will stop in the tube...
- Q 17 A semicircular loop of radius R is rotated with an angular velocity perpendicular to the plane of a magnet field B as shown in the figure Emf induced in...
- Q When a loop moves towards stationary magnet with speed v induced emf in the loop is E If the magnet also moves away from the loop with the same speed...
- Q In a step up transformer the turn ratio is 1 2 A leclanche cell e m f 1 5 V is connected across the primary The voltage across the secondary...
- Q B I U abe X X A Y A Paragraph Styles On a separate sheet complete the following FIVE transformer problems showing ALL of your work details and UNITS All...
- Q are pretty much evenly distributed among the chapters except for Good luck everyone and as before you may consult any resources you may think of during this one hour time...
- Q A bar magnet is let fall toward the center of a conducting loop of wire with the north pole oriented downward Viewed from the same side of the loop as...
- Q 2 A 5 00 m straight conductor carries a current of 15 0 A through a uniform magnetic field The magnitude of the force on the conductor is 0 67...
- Q 12 45 R A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and is placed perpendicular to the magnetic field indicated...
- Q x x x x V 0 X X VX X X X X XX X XX X X X X 4 0 V O 7 5 V X X 5...
- Q X X X X X X X X X X X X X X X X x x x x V 0 X X X X X X X X...
- Q R 20 A 5 0 mA 15 mA Enx A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and placed perpendicular...
- Q Question 25 A 40 loop circular coil has a radius of 5 0 cm It is placed in a magnetic field so that the field lines from a permanent magnet...
- Q Good luck everyone and as before you may consult any ources you may think of ing this one hour time period You don t have in any scratch work as...
- Q 13 A 9 2 m length of conducting wire is formed into a square and placed in a uniform magnetic field The square is then rotated continuously in three dimensions...
- Q 5 A circular coil has an area of 0 0100 m and consists of 200 turns of copper wire Initially a 1 1 T uniform magnetic field passes perpendicularly to...
- Q 7 Calculate the self inductance of a small solenoid 0 050 m long composed of 10 loops of wire with an area of 1 0 x 10 m If the...
- Q ANSWER ANSWER ANSWER esistor after 5 s on the capacitor after 5 s 7 The figure below shows a piece of insulated wire The upper loop has a radius of...
- Q 2 A loop with radius 0 025 m has 20 turns and a resistance of 0 500 2 A magnetic field perpendicular to the coil is B 0 050t 0...
- Q Problem 1 A low pass filter for voltage can be created as shown For any input AC voltage amplitude V the output voltage Vab will be a strong function of...
- Q one 1kQ completes a rectangular loop of a single wire The loop has an area of 0 27 m As shown there is a magnetic field coming out of the...
- Q A uniform magnetic field is present in a cylindrical region It starts changing at a constant rate A conducting wire loop is placed symmetrically as shown O O X X...
- Q 12. Which of the following would step-down the voltage that comes in to a transformer? Select all that apply.the primary coil and the second coil have the same number of...
- Q 9. A current is induced as it moves through a magnetic field. What would happen to the current if it were to be moved through a stronger magnetic field?the induced...
- Q 3. Which of the following states the Faraday's Law?The strength of the electrostatic force between two charged particles is directly proportional to the product of the charges and inversely proportional...
- Q In the figure below, a rectangular loop of wire is in a region of space where there is a magnetic field that is everywhere directed into the page and decreasing....
- Q A long straight wire carrying a current of 2.61 A moves with a constant speed v to the right. A 5 turn circular coil of diameter 12.5 cm, and resistance...
- Q A magnetic field B is confined to a region ra and points out of the paper (the z- axis), r = 0 being the centre of the circular region. A...
- Q An ordinary gold wedding ring is tossed end over end into a running MRI machine with a 4.0 T field. The ring spends 1.1 s in the field, during which...
- Q A rectangular sheet of metal ABCD with side lengths AB = a, BC = a/2 and thickness t is kept with ABCD on the x-y plane. There is a uniform...
- Q A single circular loop of wire is placed inside a long solenoid. The area vector of the loop is aligned with that of the solenoid. The area of the loop...
- Q Two inductors: 1 mH and 100 ?H are connected in series. How fast should the current change over time to produce a constant voltage of 33 mV across both of...
- Q The magnetic flux that passes through one tum of a 12-loop coil of wire changes to -40.0W, from 9.0W, in a time of 0.050s. The average induced current in the...
- Q A step-up transformer has 906 turns on its primary coil. If the input voltage is 94 V andthe output Voltage is 150 V, how many turns are on the secondary...
- Q Inductive charging is used to wirelessly charge electronic devices ranging from toothbrushes to cell phones. Suppose the base unit of an inductive charger produces a 1.20 x 10^-3 T magnetic...
- Q A car with a 1.49 m long radio antenna travels at 104 km/h in a place where the Earth's magnetic field is 7.21 10?5 T. What is the maximum possible...
- Q In a step down transformer input voltage is 20000 volts and number of turns in primary are 4000. The supply voltage at which electricity is being distributed is 200 volts....
- Q The charger cord used to recharge a cell phone contains a transformer that reduces 240 V AC to 5 V AC. For each 1,125 turns in the input coil, how...
- Q Aakash Institute 32 A current passing through a hot wire ammeter is made of two components a dc component i 3A and an ac component i 4 2 sin cot...
- Q Alternating Current 26 In a dc LR circuit current grows to th of its steady 4 state value in 2 s The time constant of LR circuit is 2 2...
- Q 5 Which of the following statement is incorrect about series resonance circuit 1 We can have resonance in a RL and a RC circuit 2 Resonance in a circuit occurs...
- Q The impedence of a series LCR circuit varies with frequency of applied voltage source as below Z 3z 9 00 Identify the correct option 00 1 At current lags the...
- Q 3 Zero 4 1 5 Volt 1 The electric current in a circuit is given by i i for some time Calculate the r m s current for the period...
- Q In an ac circuit V and I are given by V 100 V sin 100 rt and I 100 mA sinh 100rt The power dissipated in the circuit is 1...
- Q 33 In the given LCR series circuit find the source frequency which drives the circuit at resonance 1 25 Hz 3 50 Hz C 80 F L 5H ooooo V...
- Q 5 A transformer is used to light 140 watt 24 volt lamp from 240 volt AC mains the current in the main cable is 0 7 amp The efficiency of...
- Q The following circuit uses three ideal ammeters showing rms values Then regarding the reading of ammeter A3 C L2 ooooooo 200 V 250 3 L ooooooo Hz C A A3...
- Q 4 0 56C 40 Bulb 1 and Bulb 2 are identical Key is closed at t 0 and after the bulbs start glowing with their full intensities the key is...
- Q You have a 200 Q resistance a 4 00 H inductor and a 100 0 F capacitor and a variable frequency AC source with an amplitude of 3 00 volts...
- Q Analyze a circuit in which there is a series combination of a resistance of 50 ohm and a capacitance of 2 micro farad This series combination is connected across 210...
- Q Q4 A capacitor having a capacitance of 20 F is connected in series with a non inductive resistance 1200 across a 100 volt 50 Hz supply Calculate i Phase difference...
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