Embibe Experts Solutions for Chapter: Current Electricity, Exercise 1: Madhya Pradesh Board-2018

Compare the resistance of two bulbs of $50$ watt and $200$ watt if they are at the same voltage.

Write the principle of Wheatstone's bridge and derive the necessary condition for the balance of Wheatstone's bridge.

Establish the relationship between electromotive force, terminal voltage and internal resistance.

S.I. unit of electric current density is ${\mathrm{Am}}^{\mathrm{x}}$. The value of $x$ is _____.

Resistance of a resistance thermometer at $0{}^{\mathrm{o}}\mathrm{C}$ is $6\mathrm{\Omega }$. At $100{}^{\mathrm{o}}\mathrm{C}$ is $7\mathrm{\Omega }$ and at unknown temperature is $8\mathrm{\Omega }$. Find out unknown temperature.

A network of $4$ ohm, $4$ ohm and $3$ ohm resistance are connected to a $10$ volt battery as shown in figure. Compute the equivalent resistance and current obtained from battery.

Write the comparison between resistance and specific resistance of a conductor.

Draw the labelled diagram of a meter bridge. On what principle it works?