Question

plz do all 10 multible choises for the three pictures

QUESTION 1 Curly electric fields, L.o. non-Coulomb electric fields, can ONLY be generated by CHANGING magnetic fields True False QUESTION 2 The units of magnetic flux are T m? True False QUESTION 3 The coll encircles a solenold with a decreasing magnetic field; this results in an emf in the surrounding coll. There are 100 turns in the coil. The em through one turn of a collis 0.0001 V ignore negative signs for the emn). What is the emf in the coll? O 0.01 V 0.0001 V because the same emf cannot be used" multiple times by the 100 turns of wire in the coil 0.000001 V because we have to divide 0.0001 V among the 100 turns of the coil QUESTION 4 Consider the following apparatus: a metal bar can slide on two low friction rails, and the rails are connected via a resistor to complete the circuit. The entire apparatus is placed in an unchanging uniform magnetic field. When the bar is sliding at a constant velocity, an emf is produced and this emf can drive current through the circuit (as long as the bar is moving.) This emf produces an electric field in the circuit that guides current through the circuit. Choose from one of the options. The value of circuit - 17 for this circuit is zero, i.e. the electric field È guiding the current is a COULOMB electric field. The value of circut. 47 for this circuit is NOT equal to zero, i.e. the electric field guiding the current is a NON-COULOMB electric field. QUESTION 5 A curly electric field can be generated by a set of stationary charges. True False

Answer 1

Q1) TRUE

Q2) TRUE

Q3) The total emf in the coil is equal to the sum of the emf genarate in each turn , just like series combination of cells

Total emf induced = 100× 0.0001 volt = 0.01 volt

Q4) The emf induced in the circuit is due to the change in magnetic flux ,

[ Magnetic flux due to the circuit = Magnetic intensity * Area of the loop  ]

As the bar sliding upon the rails , hence the area of the closed loop changes , hence magnetic flux changes and as Faraday's law emf induces.

Therefore the 2nd option is the correct one , the electric field E guiding the current is non coulombic.

Q5) False

Q6) As the rate of change of current is large in the solenoid 2 , hence the magnetic flux changes which linked with the coil is grater , hence the grater emf indu6 in this system

solenoid 2

Q7) Faraday's type , non coulomb emf induced in the coil .

​​​​

Q8) As above discuss in Q3 , the 1st option is the right one, i.e., the flux changes due to the change (increase or decrease) in area closed by the two rails , bar and the resistor.

Q9) Here , asking about the electric field due to the stationary charges , hence the $\sum$ closed path E.dl = 0 .