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Q. No.A battery with an EMF of \(10~\text V\) and an internal resistance of \(1~\Omega\) is connected to an external resistance of \(4~\Omega,\) as shown in the figure. The terminal voltage of the battery in this configuration is:
1. \(6~\text V\)
2. \(8~\text V\)
3. \(10~\text V\)
4. \(4~\text V\)
1. \(6~\text V\)
2. \(8~\text V\)
3. \(10~\text V\)
4. \(4~\text V\)
Subtopic: EMF & Terminal Voltage |
69%
Level 2: 60%+
NEET - 2024
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A wire of length \('l'\) and resistance \(100 ~\Omega\) is divided into \(10\) equal parts. The first \(5\) parts are connected in series while the next \(5\) parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:
| 1. | \(52~ \Omega\) | 2. | \(55~ \Omega\) |
| 3. | \(60 ~\Omega\) | 4. | \(26~ \Omega\) |
Subtopic: Combination of Resistors |
69%
Level 2: 60%+
NEET - 2024
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Two heaters \(\mathrm{A}\) and \(\mathrm{B}\) have power rating of \(1~\text{kW}\) and \(2~\text{kW}\), respectively. Those two are first connected in series and then in parallel to a fixed power source. The ratio of power outputs for these two cases is:
| 1. | \(2:9\) | 2. | \(1:2\) |
| 3. | \(2:3\) | 4. | \(1:1\) |
Subtopic: Heating Effects of Current |
61%
Level 2: 60%+
NEET - 2024
Hints
The equivalent resistance \(R_{AB}\) between points \(A\) and \(B\) in the given network is:
1. \(1R\)
2. \({\dfrac35}R\)
3. \({\dfrac78}R\)
4. \({\dfrac58}R\)
1. \(1R\)
2. \({\dfrac35}R\)
3. \({\dfrac78}R\)
4. \({\dfrac58}R\)
Subtopic: Combination of Resistors |
72%
Level 2: 60%+
NEET - 2024
Hints
The value of \(R\) in the given circuit when there is no current in the \(5 ~\Omega\) resistor is:
| 1. | \(12~\Omega\) | 2. | \(9~ \Omega\) |
| 3. | \(3~ \Omega\) | 4. | \(2~ \Omega\) |
Subtopic: Wheatstone Bridge |
87%
Level 1: 80%+
NEET - 2024
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There are two heaters \(A\) and \(B.\) The heater \(A\) takes time \(t_1\) to boil a given quantity of water, while \(B\) takes time \(t_2\) to boil the same quantity of water across the same supply voltage. If the two heaters are connected in series, the time taken by this combination to boil the same quantity of water will be:
| 1. | \(\large\dfrac{t_1t_2}{t_1+t_2}\) | 2. | \(t_1+t_2\) |
| 3. | \({\large\dfrac12}(t_1+t_2)\) | 4. | \(\large\dfrac{t_1t_2}{2(t_1+t_2)}\) |
Subtopic: Heating Effects of Current |
61%
Level 2: 60%+
NEET - 2024
Hints
Arrange the following in the order of their resistance.
Choose the correct answer from the options given below:
| A. | (\(0\) to \(1~\text A\)) ranged ammeter. |
| B. | (\(0\) to \(100~\text {mA}\)) ranged milli-ammeter. |
| C. | (\(0\) to \(500~\mu\text A\)) ranged micro-ammeter. |
| D. | (\(0\) to \(100~\text V\)) ranged voltmeter. |
Choose the correct answer from the options given below:
| 1. | \(\mathrm{A > B > C > D}\) | 2. | \(\mathrm{D > C > B > A}\) |
| 3. | \(\mathrm{D > A > B > C}\) | 4. | \(\mathrm{C > B > A > D}\) |
Subtopic: Derivation of Ohm's Law |
54%
Level 3: 35%-60%
NEET - 2024
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Resistance of a carbon resistor determined from colour codes is \((22000 \pm 5 \%) ~\Omega\). The colour of third band must be:
1. Yellow
2. Red
3. Green
4. Orange
1. Yellow
2. Red
3. Green
4. Orange
Level 3: 35%-60%
NEET - 2023
Hints
The magnitude and direction of the current in the following circuit is:
| 1. | \(1.5~\text{A}\) from \({B}\) to \({A}\) through \(E\) |
| 2. | \(0.2~\text{A}\) from \({B}\) to \({A}\) through \(E\) |
| 3. | \(0.5~\text{A}\) from \({A}\) to \({B}\) through \(E\) |
| 4. | \(\dfrac{5}{9}~\text{A}\) from \({A}\) to \({B}\) through \(E\) |
Subtopic: Kirchoff's Voltage Law |
75%
Level 2: 60%+
NEET - 2023
Hints
If the galvanometer \(G\) does not show any deflection in the circuit shown, the value of \(R\) is given by;
| 1. | \(400~\Omega\) | 2. | \(200~\Omega\) |
| 3. | \(50~\Omega\) | 4. | \(100~\Omega\) |
Subtopic: Kirchoff's Voltage Law |
56%
Level 3: 35%-60%
NEET - 2023
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