Variation of current passing through a conductor as the voltage applied across its ends as varied is shown in the adjoining diagram. If the resistance (R) is determined at the points A, B, C and D, we will find that
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(a) RC = RD |
(b) RB > RA |
(c) RC > RB |
(d) None of these |
(d) None of these
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The transistors provide good power amplification when they are used in
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(a) Common collector configuration |
(b) Common emitter configuration |
|
(c) Common base configuration |
(d) None of these |
The distance between a proton and electron both having a charge 1.6 
of a hydrogen atom is 
. The value of intensity of electric field produced on electron due to proton will be
|
(a) 2.304 |
(b) 14.4 V/m |
(c) 16 V/m |
(d) 1.44 |
A wire carrying current i is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field is directed
|
(a) At an angle π/4 to the plane of the paper |
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(b) Perpendicular to the plane of the paper and directed in to the paper |
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(c) Along the bisector of the angle ACB towards AB |
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(d) Along the bisector of the angle ACB away from AB |
Assertion : The television broadcasting becomes weaker with increasing distance.
Reason : The power transmitted from TV transmitter varies inversely as the distance of the receiver
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
