(A) | When the capacitor is air filled. |
(B) | When the capacitor is mica filled. |
1. | \(V_A>V_B\) |
2. | \(V_A<V_B\) |
3. | \(V_A=V_B\) |
4. | it can't be predicted. |
1. | 2. | ||
3. | 4. |
1. | voltage across the capacitor lags behind the current. |
2. | voltage across the inductor leads the current. |
3. | voltage across \(R\) is in phase with the current. |
4. | all of the above. |
1. | 2. | ||
3. | 4. |
Assertion (A): | A glowing bulb becomes dim when an iron bar is put in the inductor in series LR ac circuit. |
Reason (R): | Resistance of circuit increases. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Statement I: | In an AC circuit, the current through a capacitor leads the voltage across it. |
Statement II: | \(\pi.\) | In AC circuits containing pure capacitance only, the phase difference between the current and the voltage is
1. | Both Statement I and Statement II are correct. |
2. | Both Statement I and Statement II are incorrect. |
3. | Statement I is correct but Statement II is incorrect. |
4. | Statement I is incorrect but Statement II is correct. |
A series R, L, C circuit is shown here. The source frequency f is varied, but the current is kept unchanged. Which of the curves showing changes of with frequency would be valid for the circuit under consideration?
1. | 2. | ||
3. | 4. |
Assertion (A): | Power loss in the Admin ideal choke coil is zero. |
Reason (R): | Ideal choke coil has zero resistance. |
In the light of the above statements choose the correct answer from the options given below:
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | A capacitor can replace the choke coils in an AC circuit. |
Reason (R): | A capacitor can reduce the current in an AC circuit like an inductor |
In the light of the above statements choose the correct answer from the options given below:
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
1. | 2. | ||
3. | 4. |