Equivalent Resistance of a system of resistorÂ

Q.

Find the resistance between $A$ and $B$ in the circuit given below:

Q.

You are given three resistors of each of resistance $4ohm.$ How many effective resistances you can obtain using all three resistors. Draw equivalent circuits in each case.

Q.

Find the current drawn from the battery and the potential difference between B and C.

1. 1 A, 4 V

2. 2 A, 4 V

3. 0.2 A, 0.4 V

4. 0.2 A, 4 V

Q.

How can three resistors of resistance 2Ω, 3Ω and 6Ω be connected to give a total resistance of 4Ω and 1Ω?

Q.

If the potential difference across a conductor is 10 V, 5 A current flows through it. What will be the current if the potential difference is increased to 15 V?

1. 2.5 A

2. 7.5 A

3. 10 A

4. 5 A

Q.

Two cells of $1.25V$ and $0.75V$ are connected in parallel. The effective voltage will be

Q. Six equal resistance of $1\Omega$ each are connceted to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves at D.

1. $1\Omega$
2. $1.5\Omega$
3. $2\Omega$
4. $2.5\Omega$

Q. The voltage across all the resistances connected in parallel will

1. constantly vary
2. remain the same
3. be infinite
4. drop to zero

Q.

A wire of resistance $6\Omega$ is cut into three equal pieces, which are joined to form a triangle. The equivalent resistance between any two corners of the triangle is:

1. 2 Ohm

2. 4 Ohm

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

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

Q.

Find the value of $‘I^{\prime }$ for the following circuit.

1. $10A$
2. $1A$
3. $\frac{1}{16}A$
4. $\frac{1}{8}A$

Q.

Two resistors $2\Omega$ and $5\Omega$ are connected in series with a $7V$ battery. Find the potential difference across the $5\Omega$ resistor.

1. $2V$

2. $7V$

3. $5V$

4. $1V$

Q.

In a series connection, the current flowing through all the resistors is the same.

1. True
2. False

Q.

What is the equivalent resistance in the given circuit?

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

Q. The potential difference between two points is 35V and the resistance of the wire connecting the two points is $35\Omega$. The current in the circuit is ___ A.

Q. When can current skip a part of the circuit?

1. Power circuit
2. Series circuit
3. High resistance circuit
4. Short circuit

Q. What is the equivalent resistance between A and B in the circuit of figure if $R=3\Omega$.

1. $8\Omega$
2. $7\Omega$
3. $6\Omega$
4. $9\Omega$