Parallel Combination of Resistors

Q. The difference in voltage of live and neutral wire in domestic circuits in India is about .

1. 240 volts
2. 440 volts
3. 220 volts
4. 330 volts

Q.

The current across each resistor of different values in parallel combination is same.

1. False

2. True

Q. Find the ratio of the maximum to the minimum resistance for a combination of 'n' equal resistors.

1. n
2. $\frac{1}{n^2}$
3. $n^2$
4. $\frac{1}{n}$

Q.

What resistance must be connected to a $15\Omega$ resistance to provide an effective resistance of $6\Omega$?

1. $10\Omega$

2. $5\Omega$

3. $2\Omega$

4. $15\Omega$

Q.

Find the equivalent resistance between A & B in the circuit given below.

1. $16.5\Omega$
2. $8.5\Omega$
3. $49\Omega$
4. $18\Omega$

Q.

For $n$ resistors of equal resistances in combination, parallel connection gives larger effective resistance than the series connection.

1. True

2. False

Q.

The following graph is drawn for parallel and series combination of resistors in a circuit. Which of the following is true about the graph?

1. A- for parallel combination and B- for the series combination

2. A- for series combination and B- for the parallel combination

3. A-for series combination and B- for the series combination

4. A-for parallel combination and B- for parallel combination

Q.

A series circuit has only one conducting path for the electrons that move through, it is the parallel circuit which has multiple conducting paths.

1. True

2. False

Q. The resistance between points M and N in the circuit is:

1. 48$\Omega$
2. 4$\Omega$
3. 64$\Omega$
4. 24$\Omega$

Q. 7 capacitors each of capacitance 2 mF to be connected to obtain a capacitance of 10/11 mF. Which of the following combination is possible 5 in parallel, 2 in series 4 in parallel, 3 in series 3 in parallel, 4 in series 2 in parallel, 5 in series

Q. In the figure, the equivalent resistance between points $x$ and $y$ is:

1. $5\Omega$
2. $\frac{10}{3}\Omega$
3. $\frac{8}{3}\Omega$
4. $4\Omega$

Q.

What is the equivalent resistance across A and B?

1. $\frac{2}{3}\Omega$

2. $\frac{3}{4}\Omega$

3. $\frac{4}{3}\Omega$

4. $\frac{5}{3}\Omega$

Q.

A man has five resistors each of value $\frac{1}{5}\Omega$. What is the minimum resistance that one can obtain by connecting all the five resistances?

1. $\frac{1}{10}\Omega$

2. $\frac{1}{5}\Omega$

3. $\frac{1}{50}\Omega$

4. $\frac{1}{25}\Omega$

Q.

In parallel combination, the total resistance of the circuit becomes ___the individual resistances.

1. equal to

2. more than

3. either less than or more than

4. less than

Q. In a parallel connection, the current has ______ path(s).

1. Single
2. Multiple
3. No
4. Reverse

Q.

Identify correct relation for the circuit mentioned below, assuming the current $I_3$ flows through a conductor with zero resistance:

1. $I_1=I_2+I_3+I_4$
2. $I_1=I_3$
3. $I_1=I_2$
4. $I_3=I_5$

Q.

What is the equivalent resistance in the given circuit?

1. $35\Omega$
2. $70\Omega$
3. $400\Omega$
4. $560\Omega$

Q.

The equivalent resistance between (a) & (b) in the circuit can be obtained by the expression:

1. $\frac{1}{R_{eq}}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+\frac{1}{R_4}$

2. $\frac{1}{R_{eq}}=\frac{1}{R_1}-\frac{1}{R_2}-\frac{1}{R_3}-\frac{1}{R_4}$

3. $R_{eq}=R_1+R_2+R_3+R_4$

4. $R_{eq}=R_1-R_2-R_3-R_4$

Q. The circuit shown has resistors of equal resistance $R$. Find the equivalent resistance between $A$ and $B$, when the key is closed.

1. $\frac{11R}{12}$
2. $\frac{13R}{12}$
3. $\frac{R}{5}$
4. $\frac{15R}{12}$

Q. Seven identical lamps of resistance 220 $\Omega$ each are connected to a 220 V line as shown in Fig. Then the reading in the ammeter will be

1. $\frac{1}{10}A$
2. $\frac{2}{3}A$
3. $\frac{3}{10}A$
4. none of these