Electromagnetic Induction & Alternating Currents (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 5 - 6 of 11

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Question number: 5

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 2011

MCQ▾

Question

In the circuit shown, the switch is closed at time t = 0.

Diagram of R-L circuit at time t = 0

Diagram of R-L Circuit at Time T = 0

In figure a resistance, inductor, a switch and a battery of 10 V is connected in a circuit.

Which of the graphs shown below best represents the voltage across the inductor, as seen on an oscilloscope?

Choices

Choice (4) Response

a.

Graph of voltage verses time choice – A

Graph of Voltage Verses Time Choice – A

In figure graph represents the voltage across the inductor, as seen on an oscilloscope?

b.

Graph of voltage verses time choice – B

Graph of Voltage Verses Time Choice – B

In figure graph represents the voltage across the inductor, as seen on an oscilloscope?

c.

Graph of voltage verses time choice – C

Graph of Voltage Verses Time Choice – C

In figure graph represents the voltage across the inductor, as seen on an oscilloscope?

d.

Graph of voltage verses time choice – D

Graph of Voltage Verses Time Choice – D

In figure graph represents the voltage across the inductor, as seen on an oscilloscope?

Question number: 6

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

Appeared in Year: 2013

MCQ▾

Question

A black box (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other external circuit elements as shown below in the figure (a). After the switch (S) is closed at time t = 0, the current (I) as a function of time (t) is shown in the figure (b).

 (a) An electric circuit consist of a black box (BB)

(A) an Electric Circuit Consist of a Black Box (BB)

(a) Figure shows a black box (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other external circuit elements.

(b) In figure current as a function of time is shown.

From this we can infer that the black box contains –

Choices

Choice (4) Response

a.

A resistor and a capacitor in series

b.

A resistor and an inductor in series

c.

A resistor and an inductor in parallel

d.

A resistor and a capacitor in parallel

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