IIT-JEE 2010 Paper 1 Offline | Alternating Current Question 13 | Physics

IIT-JEE 2010 Paper 1 Offline

MCQ (Single Correct Answer)

-1

An AC voltage source of variable angular frequency $$\omega$$ and fixed amplitude V₀ is connected in series with a capacitance C and an electric bulb of resistance R (inductance zero). When $$\omega$$ is increased

the bulb glows dimmer.

the bulb glows brighter.

total impedance of the circuit is unchanged.

total impedance of the circuit increases.

IIT-JEE 2010 Paper 2 Offline

MCQ (Single Correct Answer)

-1

You are given many resistances, capacitors and inductors. These are connected to a variable DC voltage source (the first two circuits) or an AC voltage source of 50 Hz frequency (the next three circuits) in different ways as shown in Column II. When a current I (steady state for DC or rms for AC) flows through the circuit, the corresponding voltage $V_1$ and $V_2$ (indicated in circuits) are related as shown in Column I. Match the two :

IIT-JEE 2010 Paper 2 Offline Physics - Alternating Current Question 5 English 1

IIT-JEE 2010 Paper 2 Offline Physics - Alternating Current Question 5 English 2

(A)→(R), (S), (T); (B)→(Q), (R), (S), (T); (C)→(P), (Q); (D)→(Q), (R), (S), (T)

(A)→(R), (S); (B)→(Q), (R), (S), (T); (C)→(P), (Q); (D)→(Q), (R), (T)

(A)→(R), (S), (T); (B)→(Q), (R), (S); (C)→(P), (Q); (D)→(Q), (R), (S)

(A)→(S), (T); (B)→(Q), (R), (S), (T); (C)→(P); (D)→(Q), (R), (S), (T)

IIT-JEE 2007 Paper 2 Offline

MCQ (Single Correct Answer)

-1

STATEMENT 1

A vertical iron rod has a coil of wire wound over it at the bottom end. An alternating current flows in the coil. The rod goes through a conducting ring as shown in the figure. The ring can float at a certain height above the coil.

IIT-JEE 2007 Paper 2 Offline Physics - Alternating Current Question 8 English

Because

STATEMENT 2

In the above situation, a current is induced in the ring which interacts with the horizontal component of the magnetic field to produce an average force in the upward direction.

Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is False.

Statement-1 is False, Statement-2 is True.

IIT-JEE 2006

MCQ (Single Correct Answer)

-0

Match the following columns.

	Column I		Column II
(A)	Dielectric ring uniformly charged.	(P)	Time independent electrostatic field out of system.
(B)	Dielectric ring uniformly charged rotating with angular velocity $$\omega$$.	(Q)	Magnetic field.
(C)	Constant current in ring $$io$$	(R)	Induced electric field.
(D)	$$i=i_0\cos\omega t$$	(S)	Magnetic moment.

A $$\to$$ (P); B $$\to$$ (Q, S); C $$\to$$ (Q, S); D $$\to$$ (Q, R, S)

A $$\to$$ (P); B $$\to$$ (S); C $$\to$$ (Q, S); D $$\to$$ (R, S)

A $$\to$$ (P); B $$\to$$ (Q); C $$\to$$ (Q, S); D $$\to$$ (S)

A $$\to$$ (P); B $$\to$$ (S); C $$\to$$ (Q); D $$\to$$ (Q, R, S)

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