- 1(current)
Q. No.An LR circuit with a battery is connected at t = 0. Which of the following quantities is not zero just after the connection?
(a) current in the circuit
(b) magnetic field energy in the inductor
(c) power delivered by the battery
(d) emf induced in the inductor
Choose the correct option
1. (a), (b)
2. (b), (c)
3. (c), (a)
4. (d) only
\(L,\) \(C\) and \(R\) represent the physical quantities inductance, capacitance and resistance respectively. Which of the following combinations have dimensions of frequency?
(a) \(1 \over RC\)
(b) \(R \over L\)
(c) \(\frac{1}{\sqrt{\mathrm{LC}}}\)
(d) \(C \over L\)
Choose the correct option:
| 1. | (a), (b), (c) |
| 2. | (d), (c), (a) |
| 3. | (c), (d), (b) |
| 4. | (a), (d), (b) |
The switches in figure (a) and (b) are closed at t = 0 and reopened after a long time at t = t0
| 1. | The charge on C just after t = 0 is εC. |
| 2. | The charge on C long after t = 0 is εC. |
| 3. | The current in L just before t = t0 is ε/R. |
| 4. | The current in L long after t = t0 is ε/R. |
Choose the correct option:
| 1. | (a), (b) |
| 2. | (b), (c) |
| 3. | (c), (d) |
| 4. | (a), (d) |
- 1(current)
Q. No.
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