Kirchhoff's laws and their applications — practice questions

Question 1 · difficulty L2 · understanding

The net current flowing in the given circuit is __________ A.

Question 2 · difficulty L2 · understanding

Two cells are connected in opposition as shown. Cell $$\mathrm{E}_1$$ is of $$8 \mathrm{~V}$$ emf and $$2 \Omega$$ internal resistance; the cell $$\mathrm{E}_2$$ is of $$2 \mathrm{~V}$$ emf and $$4 \Omega$$ internal resistance. The terminal potential difference of cell $$\mathrm{E}_2$$ is __________ V.

Question 3 · difficulty L2 · understanding

In the given circuit, the current flowing through the resistance $$20 \Omega$$ is $$0.3 \mathrm{~A}$$, while the ammeter reads $$0.9 \mathrm{~A}$$. The value of $$\mathrm{R}_1$$ is _________ $$\Omega$$.

Question 4 · difficulty L2 · understanding

A network of four resistances is connected to $9 \mathrm{~V}$ battery, as shown in figure. The magnitude of voltage difference between the points $\mathrm{A}$ and $\mathrm{B}$ is __________ $V$.

Question 5 · difficulty L2 · understanding

In the given circuit, the value of $$\left| {{{{\mathrm{I_1}} + {\mathrm{I_3}}} \over {{\mathrm{I_2}}}}} \right|$$ is _____________

Question 6 · difficulty L2 · understanding

In the given figure, the value of V o will be _____________ V.

Question 7 · difficulty L2 · understanding

For the network shown below, the value of V B $$-$$ V A is ____________ V.

Question 8 · difficulty L2 · understanding

For the circuit shown, the value of current at time t = 3.2 s will be _________ A. [Voltage distribution V(t) is shown by Fig. (1) and the circuit is shown in Fig. (2)]

Question 9 · difficulty L2 · understanding

In the figure given, the electric current flowing through the 5 k$$\Omega$$ resistor is 'x' mA. The value of x to the nearest integer is ____________.

Question 10 · difficulty L2 · understanding

The reading of the ammeter $(A)$ in steady state in the following circuit (assuming negligible internal resistance of the ammeter) is $\_\_\_\_$ A.

• A. 1/2
• B. 1
• C. 2
• D. 0