# A 35V- source is connected to a series circuit at 600 ohm and R as shown. If a voltmeter at internal resistance 1.2 kilo ohms is connected across 600 ohm resister it reads 5 V. the value R is

1.  1.2 kΩ

2.  2.4 kΩ

3.  3.6 kΩ

4.  7.2 kΩ

4

2.4 kΩ

Explanation :
No Explanation available for this question

# In the figure if we connected a source of 2 V with internal resistance of 1Ω at AI A with positive terminal at AI, then the current through R is.

1.   2 A

2.  1.66 A

3.  1 A

4.   6.625 A

4

6.625 A

Explanation :
No Explanation available for this question

# In the circuit shown, the value at I is.

1.  1 A

2.  2 A

3.  4 A

4.  8 A

4

2 A

Explanation :
No Explanation available for this question

# The concentric rings 1 and 2 carrying equal and uniform charge densities revolves at the same angular speed ω about their common axis passing through O as shown. The ratio of flux densities due to the two rings at 0 will be

1.  1:1

2.  1:2

3.   1:4

4.  2:1

4

1:1

Explanation :
No Explanation available for this question

# A sinusoidal voltage V and frequency f is connected to a series circuit at variable resistance R and a fixed resistance X. the locus of the tip of the current phasor I as R is varied from 0 to is

1.  A semicircle with a diameter 0.1 V/X

2.  a straight line with a slope R/X

3.  an ellipse with V/R as major axis

4.  a circle at radius R/X and origin at (0, V/2)

4

A semicircle with a diameter 0.1 V/X

Explanation :
No Explanation available for this question

# A circuit with a resistor, inductor and capacitor in series is resonant of fo Hz. If all the component values are now doubled, the new resonant frequency is.

1.  2 f0

2.   still f0

3.  f0/2

4.  f0/4

4

f0/2

Explanation :
No Explanation available for this question

# Volt equivalent of temperature is given by

1.  q/KT

2.  qKT

3.  KT/q

4.  KT

4

KT/q

Explanation :
No Explanation available for this question

# In the circuit shown in figure it is desired to have a constant direct current i(t) through the ideal inductor L. The nature of the voltage source v(t) must be

1.  constant voltage

2.   linearly increasing voltage

3.  an ideal impulse

4.  exponential increasing voltage

4

an ideal impulse

Explanation :
No Explanation available for this question

# Fermi level of an intrinsic semi conductor lies

1.  Near Valence band

2.  Near conduction band

3.  Middle of the valence band & conduction band

4.  Can lie any where

4

Middle of the valence band & conduction band

Explanation :
No Explanation available for this question

# The law of electromagnetic induction (Faraday’s and Len z’ law) are summarized in the equation

1.  e = Ir

2.  e = Ldi/dt

3.  e = dq/dt

4.  None of the above

4