Maharashtra Board Solutions for Chapter: Current Electricity, Exercise 2: Exercise

The following table shows current in Amperes and potential difference in Volts.

What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)

The following table shows current in Amperes and potential difference in Volts.

 Which law will the graph prove?

Match the pairs.

Three resistances $x_{1,}{x}_2 , x_3$ are connected in a circuit in different ways. $x$ is the effective resistance. The properties observed for these different ways of connecting $x_{1,}{x}_2,x_3$are given below. Write the way in which they are connected in each case. (I-current, V-potential difference, x-effective resistance)

$x$ is larger than $x_1,x_2,x_3.$

Three resistances $x_{1,}{x}_2 , x_3$ are connected in a circuit in different ways. $x$ is the effective resistance. Write the way in which they $x_{1, }{x}_2, x_3$ are connected in the following case. (I-current, V-potential difference, x-effective resistance)

When $x$ is larger than $x_1,x_2,x_3.$

Three resistances $x_1$ ,$x_2$  and $x_3$ are connected in a circuit in different ways. $x$ is the effective resistance. The properties observed for these different ways of connecting $x_1, x_2, and x_3$ are given below. Write the way in which they are connected in each case. ($\mathrm{I}$-current, $\mathrm{V}$-potential difference, $x$-effective resistance)

 The potential across $x_1, x_2, and x_3$ is the same.

Three resistances $x_1,x_2,x_3$are connected in a circuit in different ways. $x$ is the effective resistance. The properties observed for these different ways of connecting $x_1,x_2,x_3$ are given below. Write the way in which they are connected in each case. (I-current, V-potential difference, x-effective resistance)

. $x=x_1+x_2+x_3$

Three resistances $x_{1,}{x}_2 , x_3$ are connected in a circuit in different ways. $x$ is the effective resistance. Write the way in which they $x_{1, }{x}_2, x_3$ are connected in the following case. (I-current, V-potential difference, x-effective resistance)

When $x=\frac{1}{{\displaystyle \frac{1}{x_1}}+{\displaystyle \frac{1}{x_2}}+{\displaystyle \frac{1}{x_3}}}$.