A galvanometer of resistance $100 \Omega$ gives full scale deflection for a current of 1 mA . It is converted into an ammeter of range $0-10 \mathrm{~A}$. The shunt required is:
$0.01 \Omega$
$0.10 \Omega$
$1.0 \Omega$
$0.001 \Omega$
In a metre bridge experiment (see figure), the positions of the cell, $E$, and galvanometer, $G$, are interchanged. We shall observe in the galvanometer:

Only the left-sided deflection
There will be no deflection irrespective of the position of the jockey
Only the right-sided deflection
Both right-sided and left-sided deflection and at balance point, no deflection
The peak value of an alternating current is 5 A and frequency is 60 Hz . How long will the current, starting from zero, take to reach the peak value?
$\frac{1}{120} \mathrm{~s}$
$\frac{1}{60} \mathrm{~s}$
$\frac{1}{30} \mathrm{~s}$
$\frac{1}{240} \mathrm{~s}$
The figure given below shows a long straight solid wire of circular cross-section of radius ' $a$ ' carrying steady current $I$. The current $I$ is uniformly distributed across its cross-section. The plot which correctly represents the variation of magnetic field $(B)$ with distance $(r)$ from the axis of the conductor in the region is :





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