154875 For a current carrying inductor, emf associated is $20 \mathrm{~m} \mathrm{~V}$. Now, current through it changes from $6 \mathrm{~A}$ to $2 \mathrm{~A}$ in $2 \mathrm{~s}$. The coefficient of mutual inductance is

154876 A circuit has a self- inductance of $1 \mathrm{H}$ and carries a current of $2 \mathrm{~A}$. To prevent sparking, when the circuit is switched off, a capacitor which can with stands $400 \mathrm{~V}$ is used. The least capacitance of capacitor connected across the switch must be equal to

154877 A solenoid $30 \mathrm{~cm}$ long is made by winding 2000 loops of wire on an iron rod whose crosssection is $1.5 \mathrm{~cm}^{2}$. If the relative permeability of the iron is 6000. What is the self-inductance of the solenoid?

154878 The current $i$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be

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154875 For a current carrying inductor, emf associated is $20 \mathrm{~m} \mathrm{~V}$. Now, current through it changes from $6 \mathrm{~A}$ to $2 \mathrm{~A}$ in $2 \mathrm{~s}$. The coefficient of mutual inductance is

154876 A circuit has a self- inductance of $1 \mathrm{H}$ and carries a current of $2 \mathrm{~A}$. To prevent sparking, when the circuit is switched off, a capacitor which can with stands $400 \mathrm{~V}$ is used. The least capacitance of capacitor connected across the switch must be equal to

154877 A solenoid $30 \mathrm{~cm}$ long is made by winding 2000 loops of wire on an iron rod whose crosssection is $1.5 \mathrm{~cm}^{2}$. If the relative permeability of the iron is 6000. What is the self-inductance of the solenoid?

154878 The current $i$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be

1

2

3

4

154875 For a current carrying inductor, emf associated is $20 \mathrm{~m} \mathrm{~V}$. Now, current through it changes from $6 \mathrm{~A}$ to $2 \mathrm{~A}$ in $2 \mathrm{~s}$. The coefficient of mutual inductance is

154876 A circuit has a self- inductance of $1 \mathrm{H}$ and carries a current of $2 \mathrm{~A}$. To prevent sparking, when the circuit is switched off, a capacitor which can with stands $400 \mathrm{~V}$ is used. The least capacitance of capacitor connected across the switch must be equal to

154877 A solenoid $30 \mathrm{~cm}$ long is made by winding 2000 loops of wire on an iron rod whose crosssection is $1.5 \mathrm{~cm}^{2}$. If the relative permeability of the iron is 6000. What is the self-inductance of the solenoid?

154878 The current $i$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be

1

2

3

4

154875 For a current carrying inductor, emf associated is $20 \mathrm{~m} \mathrm{~V}$. Now, current through it changes from $6 \mathrm{~A}$ to $2 \mathrm{~A}$ in $2 \mathrm{~s}$. The coefficient of mutual inductance is

154876 A circuit has a self- inductance of $1 \mathrm{H}$ and carries a current of $2 \mathrm{~A}$. To prevent sparking, when the circuit is switched off, a capacitor which can with stands $400 \mathrm{~V}$ is used. The least capacitance of capacitor connected across the switch must be equal to

154877 A solenoid $30 \mathrm{~cm}$ long is made by winding 2000 loops of wire on an iron rod whose crosssection is $1.5 \mathrm{~cm}^{2}$. If the relative permeability of the iron is 6000. What is the self-inductance of the solenoid?

154878 The current $i$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be

1

2

3

4