R P Goyal and S P Tripathi Solutions for Chapter: Current Electricity, Exercise 2: EXERCISE-8(B)

Calculate the effective resistance between the points $A$ and $B$ in the network shown below in Figure.

Five resistors, each $3 \mathrm{\Omega }$, are connected as shown in Figure. Calculate the resistance between the points X and Y.

A battery of e.m.f. $15 \mathrm{V}$ and internal resistance $3 \mathrm{\Omega }$ is connected to two resistors $3 \mathrm{\Omega }$ and $6 \mathrm{\Omega }$ connected in parallel. Find the current through the battery.

A battery of e.m.f. $15 \mathrm{V}$ and internal resistance $3 \mathrm{\Omega }$ is connected to two resistors $3 \mathrm{\Omega }$ and $6 \mathrm{\Omega }$ connected in parallel. Find the p.d. between the terminals of the battery.

The following circuit diagram shows three resistors $2 \mathrm{\Omega }$, $4 \mathrm{\Omega }$ and $R \mathrm{\Omega }$ connected to a battery of e.m.f. $2 \mathrm{V}$ and internal resistance $3 \mathrm{\Omega }$. A main current of $0.25 \mathrm{A}$ flows through the circuit. Find the p.d. across the $R \mathrm{\Omega }$ or $2 \mathrm{\Omega }$ resistor.

The following circuit diagram shows three resistors $2 \mathrm{\Omega }$, $4 \mathrm{\Omega }$ and $R \mathrm{\Omega }$ connected to a battery of e.m.f. $2 \mathrm{V}$ and internal resistance $3 \mathrm{\Omega }$. A main current of $0.25 \mathrm{A}$ flows through the circuit. Find the value of $R$.

Three resistors of $6.0 \mathrm{\Omega }$, $2.0 \mathrm{\Omega }$ and $4.0 \mathrm{\Omega }$ are joined to an ammeter $A$ and a cell of e.m.f. $6.0 \mathrm{V}$ as shown in the figure. Calculate the reading of ammeter.

The diagram below in the figure shows the arrangement of five different resistances connected to a battery of e.m.f. $1.8 \mathrm{V}$. Calculate the reading of ammeter $A$.