MCQ
The lead wires should have
  • Larger diameter and low resistance
  • B
    Smaller diameter and high resistance
  • C
    Smaller diameter and low resistance
  • D
    Larger diameter and high resistance

Answer

Correct option: A.
Larger diameter and low resistance
a
(a)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A ball is projected at an angle $45^o$ with horizontal. It passes through a wall of height $h$  at horizontal distance $d_1$ from the point of projection and strikes the ground at a  horizontal distance $(d_1 + d_2)$ from the point of projection, then $h$ is
A charge $Q$ is uniformly distributed over a large square plate of copper. The electric  field at a point very close to the centre of the plane is $10\, V/m$. If the copper plate is  replaced by a plastic plate of the same geometrical dimensions and carrying the same  charge $Q$ uniformly distributed, then the electric field at the point $P$ will be......$V/m$
The work done in stretching an elastic wire per unit volume is 
The bob of a pendulum was released from a horizontal position. The length of the pendulum is $10\ m$ . If it dissipates $10 \%$ of its initial energy against air resistance, the speed with which the bob arrives at the lowest point is : $[$Use, $\left.g : 10 ms^{-2}\right]$
A lead ball moving with a velocity $V$ strikes a wall and stops. If $50\%$ of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is $S$)
Two point sources $X$ and $Y$ emit waves of same frequency and speed but $Y$ lags in phase behind $X$ by $2 \pi l$ radian. If there is a maximum in direction $D$ the distance $XO$ using n as an integer is given by
A mirror is placed at an angle of $30^{\circ}$ with respect to $Y$-axis (see figure). A light ray travelling in the negative $y$-direction strikes the mirror. The direction of the reflected ray is given by the vector
In a communication system, noise is most likely to affect the signal
$2\,\mu F$ capacitance has potential difference across its two terminals $200\;volts$. It is disconnected with battery and then another uncharged capacitance is connected in parallel to it, then $P.D.$ becomes $20\;volts$. Then the capacity of another capacitance will be.......$\mu F$
Four simple harmonic vibrations:

${y_1} = 8\,\cos\, \omega t;\,{y_2} = 4\,\cos \,\left( {\omega t + \frac{\pi }{2}} \right)$ ; 

${y_3} = 2\cos \,\left( {\omega t + \pi } \right);\,{y_4} = \,\cos \,\left( {\omega t + \frac{{3\pi }}{2}} \right)$ , 

are superposed on each other. The resulting amplitude and phase are respectively;