Q. No.A battery of emf \(10\) V is connected to resistance as shown in the figure below. The potential difference \(V_{A} - V_{B}\)
between the points \(A\) and \(B\) is:
1. \(-2\) V
2. \(2\) V
3. \(5\) V
4. \(\frac{20}{11}~\text{V}\)
between the points \(A\) and \(B\) is:
What is the equivalent resistance of the circuit?
1. \(6~\Omega\)
2. \(7~\Omega\)
3. \(8~\Omega\)
4. \(9~\Omega\)
If each resistance in the figure is \(9~\Omega\), then the reading of the ammeter is:
1. \(5~\text{A}\)
2. \(8~\text{A}\)
3. \(2~\text{A}\)
4. \(9~\text{A}\)
Equivalent resistance across terminals \(A\) and \(B\) will be:
1. \(1~\Omega\)
2. \(2~\Omega\)
3. \(3~\Omega\)
4. \(4~\Omega\)
The total current supplied to the circuit by the battery is:
1. \(1~\text{A}\)
2. \(2~\text{A}\)
3. \(4~\text{A}\)
4. \(6~\text{A}\)
In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to \(3\) volt. The voltage across the resistance \(R_4\) is:
1. \(0.4\) V
2. \(0.6\) V
3. \(1.2\) V
4. \(1.5\) V
A battery of emf \(E\) and internal resistance \(r\) is connected to a variable resistor \(R\) as shown below. Which one of the following is true?
| 1. | Potential difference across the terminals of the battery is maximum when \(R=r\). |
| 2. | Power delivered to the resistor is maximum when \(R=r\). |
| 3. | Current in the circuit is maximum when \(R=r\). |
| 4. | Current in the circuit is maximum when \(R>>r\). |
Consider the circuit shown in the figure below. The current \(I_3\) is equal to:
1. \(5\) A
2. \(3\) A
3. \(-3\) A
4. \(\frac{-5}{6}\) A
In the Wheatstone's bridge (shown in the figure below) \(X=Y\) and \(A>B\). The direction of the current between \(a\) and \(b\) will be:
| 1. | from \(a\) to \(b\). |
| 2. | from \(b\) to \(a\). |
| 3. | from \(b\) to \(a\) through \(c\). |
| 4. | from \(a\) to \(b\) through \(c\). |
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