Resistors in Series

Q. Find equivalent resistance between A & B in the circuit:

1. 16.5

Q.

Two inductors of inductance $L$ each are connected in series with the opposite magnetic fluxes. The resultant inductance is

1. Zero

2. $L$

3. $2L$

4. $3L$

Q.

What is the maximum resistance which can be made using five resistors each of $\frac{1}{5}\Omega$?

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

2. $10\Omega$

3. $5\Omega$

4. $1\Omega$

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. In a series connection, the net potential difference is the sum of all the potential drops in the circuit.

1. equal to
2. greater than
3. lesser than

Q. Eleven $15\Omega$ and four $7\Omega$ resistors are connected in series. If a new resistance of $21\Omega$ is added in series, the change in the effective resistance would be:

1. 
   $21\Omega$
2. 
   $193\Omega$
3. 
   $234\Omega$
4. 
   $15\Omega$

Q.

The equivalent resistance between the points A & B in the circuit is:

1. $R_1+R_2$
2. $R_1+R_2+R_3$
3. $R_1+R_3$
4. $R_2+R_3$

Q.

Question 6
What is the maximum resistance which can be made using five resistors each of $\frac{1}{5}\Omega$?

(a) $\frac{1}{5}\Omega$
(b) $10\Omega$
(c) $5\Omega$
(d) $1\Omega$

Q. An electric kettle consumes 1 KW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?
Availability of the fuses are 2A, 4A, 5A. [1 Mark]

Q. Equivalent resistance between (a) & (b) in the circuit can be obtained by:

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

Q. Which of the following factors affect the resistance of a conductor?

1. Length
2. Material
3. Thickness
4. Applied voltage
5. Resistivity
6. Colour
7. Temperature
8. Mass

Q.

If four resistances each of values 1 ohm are connected in series, resultant resistance in Ohms

1. 0

2. 4

3. 3

4. 1

Q. In a series connection, the net potential difference is the sum of all the potential drops in the circuit.

1. equal to
2. greater than
3. lesser than

Q. The same amount of electric current flows through each resistor, in a series combination of resistors.

1. False
2. True

Q. In the following circuit, calculate the electric current shown in ammeter, flowing through the $20.5\Omega$ resistor.

1. 
   3.66
2. 
   0.366
3. 
   0.36605
4. 
   0.3661