03. Inductance (Self and Mutual Induction)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Electro Magnetic Induction

154898 What is the self inductance of a coil which produces $5 \mathrm{~V}$ when the current changes from 2 ampere to 3 ampere in one millisecond?

1 5000 Henry
2 5 millihenry
3 50 Henry
4 5 Henry
Electro Magnetic Induction

154899 Two different coils have self-inductance $L_{1}=8$ $\mathrm{mH}, \mathrm{L}_{2}=2 \mathrm{mH}$. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are $i_{1} V_{1}$, and $W_{1}$ respectively. Corresponding values for the second coil at the same instant are $i_{2}, V_{2}$, and $\mathrm{W}_{2}$ respectively.

1 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=8$
2 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{8}$
3 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=4$
4 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{4}$
Electro Magnetic Induction

154901 A uniform magnetic field $B$ points vertically up and is slowly changed in magnitude, but not in direction. The rate of change of the magnetic field is $\alpha$. A conducting ring of radius $r$ and resistance $R$ is held perpendicular to the magnetic field and is totally inside it. The induced current in the ring is then

1 zero
2 $\frac{2 \pi \mathrm{rB}}{\mathrm{R}}$
3 $\frac{\mathrm{r} \alpha}{\mathrm{R}}$
4 $\frac{\pi r^{2} \alpha}{R}$
Electro Magnetic Induction

154902 A short solenoid of radius a, number of turns per Unit length $n_{1}$ ' and length $L$ is kept coaxially inside a very long solenoid of radius $b$, the number of turns per Unit length $n_{2}$. What is the mutual inductance of the system?

1 $\mu_{0} \pi b^{2} n_{1} n_{2} L$
2 $\mu_{0} \pi \mathrm{a}^{2} \mathrm{n}_{1} \mathrm{n}_{2} \mathrm{~L}^{2}$
3 $\mu_{0} \pi a^{2} n_{1} n_{2} L$
4 $\mu_{0} \pi b^{2} n_{1} n_{2} L^{2}$
Electro Magnetic Induction

154898 What is the self inductance of a coil which produces $5 \mathrm{~V}$ when the current changes from 2 ampere to 3 ampere in one millisecond?

1 5000 Henry
2 5 millihenry
3 50 Henry
4 5 Henry
Electro Magnetic Induction

154899 Two different coils have self-inductance $L_{1}=8$ $\mathrm{mH}, \mathrm{L}_{2}=2 \mathrm{mH}$. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are $i_{1} V_{1}$, and $W_{1}$ respectively. Corresponding values for the second coil at the same instant are $i_{2}, V_{2}$, and $\mathrm{W}_{2}$ respectively.

1 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=8$
2 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{8}$
3 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=4$
4 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{4}$
Electro Magnetic Induction

154901 A uniform magnetic field $B$ points vertically up and is slowly changed in magnitude, but not in direction. The rate of change of the magnetic field is $\alpha$. A conducting ring of radius $r$ and resistance $R$ is held perpendicular to the magnetic field and is totally inside it. The induced current in the ring is then

1 zero
2 $\frac{2 \pi \mathrm{rB}}{\mathrm{R}}$
3 $\frac{\mathrm{r} \alpha}{\mathrm{R}}$
4 $\frac{\pi r^{2} \alpha}{R}$
Electro Magnetic Induction

154902 A short solenoid of radius a, number of turns per Unit length $n_{1}$ ' and length $L$ is kept coaxially inside a very long solenoid of radius $b$, the number of turns per Unit length $n_{2}$. What is the mutual inductance of the system?

1 $\mu_{0} \pi b^{2} n_{1} n_{2} L$
2 $\mu_{0} \pi \mathrm{a}^{2} \mathrm{n}_{1} \mathrm{n}_{2} \mathrm{~L}^{2}$
3 $\mu_{0} \pi a^{2} n_{1} n_{2} L$
4 $\mu_{0} \pi b^{2} n_{1} n_{2} L^{2}$
Electro Magnetic Induction

154898 What is the self inductance of a coil which produces $5 \mathrm{~V}$ when the current changes from 2 ampere to 3 ampere in one millisecond?

1 5000 Henry
2 5 millihenry
3 50 Henry
4 5 Henry
Electro Magnetic Induction

154899 Two different coils have self-inductance $L_{1}=8$ $\mathrm{mH}, \mathrm{L}_{2}=2 \mathrm{mH}$. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are $i_{1} V_{1}$, and $W_{1}$ respectively. Corresponding values for the second coil at the same instant are $i_{2}, V_{2}$, and $\mathrm{W}_{2}$ respectively.

1 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=8$
2 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{8}$
3 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=4$
4 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{4}$
Electro Magnetic Induction

154901 A uniform magnetic field $B$ points vertically up and is slowly changed in magnitude, but not in direction. The rate of change of the magnetic field is $\alpha$. A conducting ring of radius $r$ and resistance $R$ is held perpendicular to the magnetic field and is totally inside it. The induced current in the ring is then

1 zero
2 $\frac{2 \pi \mathrm{rB}}{\mathrm{R}}$
3 $\frac{\mathrm{r} \alpha}{\mathrm{R}}$
4 $\frac{\pi r^{2} \alpha}{R}$
Electro Magnetic Induction

154902 A short solenoid of radius a, number of turns per Unit length $n_{1}$ ' and length $L$ is kept coaxially inside a very long solenoid of radius $b$, the number of turns per Unit length $n_{2}$. What is the mutual inductance of the system?

1 $\mu_{0} \pi b^{2} n_{1} n_{2} L$
2 $\mu_{0} \pi \mathrm{a}^{2} \mathrm{n}_{1} \mathrm{n}_{2} \mathrm{~L}^{2}$
3 $\mu_{0} \pi a^{2} n_{1} n_{2} L$
4 $\mu_{0} \pi b^{2} n_{1} n_{2} L^{2}$
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Electro Magnetic Induction

154898 What is the self inductance of a coil which produces $5 \mathrm{~V}$ when the current changes from 2 ampere to 3 ampere in one millisecond?

1 5000 Henry
2 5 millihenry
3 50 Henry
4 5 Henry
Electro Magnetic Induction

154899 Two different coils have self-inductance $L_{1}=8$ $\mathrm{mH}, \mathrm{L}_{2}=2 \mathrm{mH}$. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are $i_{1} V_{1}$, and $W_{1}$ respectively. Corresponding values for the second coil at the same instant are $i_{2}, V_{2}$, and $\mathrm{W}_{2}$ respectively.

1 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=8$
2 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{8}$
3 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=4$
4 $\frac{\mathrm{W}_{2}}{\mathrm{~W}_{1}}=\frac{1}{4}$
Electro Magnetic Induction

154901 A uniform magnetic field $B$ points vertically up and is slowly changed in magnitude, but not in direction. The rate of change of the magnetic field is $\alpha$. A conducting ring of radius $r$ and resistance $R$ is held perpendicular to the magnetic field and is totally inside it. The induced current in the ring is then

1 zero
2 $\frac{2 \pi \mathrm{rB}}{\mathrm{R}}$
3 $\frac{\mathrm{r} \alpha}{\mathrm{R}}$
4 $\frac{\pi r^{2} \alpha}{R}$
Electro Magnetic Induction

154902 A short solenoid of radius a, number of turns per Unit length $n_{1}$ ' and length $L$ is kept coaxially inside a very long solenoid of radius $b$, the number of turns per Unit length $n_{2}$. What is the mutual inductance of the system?

1 $\mu_{0} \pi b^{2} n_{1} n_{2} L$
2 $\mu_{0} \pi \mathrm{a}^{2} \mathrm{n}_{1} \mathrm{n}_{2} \mathrm{~L}^{2}$
3 $\mu_{0} \pi a^{2} n_{1} n_{2} L$
4 $\mu_{0} \pi b^{2} n_{1} n_{2} L^{2}$