Combinations of Inductors
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PHXII06:ELECTROMAGNETIC INDUCTION

358362 Two inductors \(L_{1}\) and \(L_{2}\) are connected in parallel and a time varying current flows as shown. The ratio \(\dfrac{i_{1}}{i_{2}}\) is equal to
supporting img

1 \(L_{2} / L_{1}\)
2 \(L_{1} / L_{2}\)
3 \(\dfrac{L_{2}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
4 \(\dfrac{L_{1}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358363 The equivalent inductance of two inductances is 2.4 henry when connected in parallel and 10 henry when connected in series. The difference between the two inductances is

1 \(2{\text{ }}henry\)
2 \(5{\text{ }}henry\)
3 \(3{\text{ }}henry\)
4 \(4{\text{ }}henry\)
PHXII06:ELECTROMAGNETIC INDUCTION

358364 Two identical induction coils each of inductance \(L\) joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other. What is the net inductance?

1 \(L^{2}\)
2 \(2\;L\)
3 \(L/2\)
4 zero
PHXII06:ELECTROMAGNETIC INDUCTION

358365 Pure inductance of \(3.0H\) is connected as shown below. The equivalent inductance of the circuit is
supporting img

1 \(9H\)
2 \(3H\)
3 \(2H\)
4 \(1H\)
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PHXII06:ELECTROMAGNETIC INDUCTION

358362 Two inductors \(L_{1}\) and \(L_{2}\) are connected in parallel and a time varying current flows as shown. The ratio \(\dfrac{i_{1}}{i_{2}}\) is equal to
supporting img

1 \(L_{2} / L_{1}\)
2 \(L_{1} / L_{2}\)
3 \(\dfrac{L_{2}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
4 \(\dfrac{L_{1}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358363 The equivalent inductance of two inductances is 2.4 henry when connected in parallel and 10 henry when connected in series. The difference between the two inductances is

1 \(2{\text{ }}henry\)
2 \(5{\text{ }}henry\)
3 \(3{\text{ }}henry\)
4 \(4{\text{ }}henry\)
PHXII06:ELECTROMAGNETIC INDUCTION

358364 Two identical induction coils each of inductance \(L\) joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other. What is the net inductance?

1 \(L^{2}\)
2 \(2\;L\)
3 \(L/2\)
4 zero
PHXII06:ELECTROMAGNETIC INDUCTION

358365 Pure inductance of \(3.0H\) is connected as shown below. The equivalent inductance of the circuit is
supporting img

1 \(9H\)
2 \(3H\)
3 \(2H\)
4 \(1H\)
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PHXII06:ELECTROMAGNETIC INDUCTION

358362 Two inductors \(L_{1}\) and \(L_{2}\) are connected in parallel and a time varying current flows as shown. The ratio \(\dfrac{i_{1}}{i_{2}}\) is equal to
supporting img

1 \(L_{2} / L_{1}\)
2 \(L_{1} / L_{2}\)
3 \(\dfrac{L_{2}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
4 \(\dfrac{L_{1}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358363 The equivalent inductance of two inductances is 2.4 henry when connected in parallel and 10 henry when connected in series. The difference between the two inductances is

1 \(2{\text{ }}henry\)
2 \(5{\text{ }}henry\)
3 \(3{\text{ }}henry\)
4 \(4{\text{ }}henry\)
PHXII06:ELECTROMAGNETIC INDUCTION

358364 Two identical induction coils each of inductance \(L\) joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other. What is the net inductance?

1 \(L^{2}\)
2 \(2\;L\)
3 \(L/2\)
4 zero
PHXII06:ELECTROMAGNETIC INDUCTION

358365 Pure inductance of \(3.0H\) is connected as shown below. The equivalent inductance of the circuit is
supporting img

1 \(9H\)
2 \(3H\)
3 \(2H\)
4 \(1H\)
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PHXII06:ELECTROMAGNETIC INDUCTION

358362 Two inductors \(L_{1}\) and \(L_{2}\) are connected in parallel and a time varying current flows as shown. The ratio \(\dfrac{i_{1}}{i_{2}}\) is equal to
supporting img

1 \(L_{2} / L_{1}\)
2 \(L_{1} / L_{2}\)
3 \(\dfrac{L_{2}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
4 \(\dfrac{L_{1}^{2}}{\left(L_{1}+L_{2}\right)^{2}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358363 The equivalent inductance of two inductances is 2.4 henry when connected in parallel and 10 henry when connected in series. The difference between the two inductances is

1 \(2{\text{ }}henry\)
2 \(5{\text{ }}henry\)
3 \(3{\text{ }}henry\)
4 \(4{\text{ }}henry\)
PHXII06:ELECTROMAGNETIC INDUCTION

358364 Two identical induction coils each of inductance \(L\) joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other. What is the net inductance?

1 \(L^{2}\)
2 \(2\;L\)
3 \(L/2\)
4 zero
PHXII06:ELECTROMAGNETIC INDUCTION

358365 Pure inductance of \(3.0H\) is connected as shown below. The equivalent inductance of the circuit is
supporting img

1 \(9H\)
2 \(3H\)
3 \(2H\)
4 \(1H\)
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