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Q. No.Arrange the following in the order of their resistance.
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
Hints
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
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
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. | \({\dfrac58}R\) |
Subtopic: Combination of Resistors |
72%
Level 2: 60%+
NEET - 2024
Hints
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. \(1:1\)
1. \(2:9\)
2. \(1:2\)
3. \(2:3\)
4. \(1:1\)
Subtopic: Heating Effects of Current |
61%
Level 2: 60%+
NEET - 2024
Hints
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 |
68%
Level 2: 60%+
NEET - 2024
Hints
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
Hints
The emf of a cell having internal resistance \(1~ \Omega\) is balanced against a length of \(330~\text{cm}\) on a potentiometer wire. When an external resistance of \(2 ~\Omega\) is connected across the cell, the balancing length will be:
| 1. | \(220~\text{cm}\) | 2. | \(330~\text{cm}\) |
| 3. | \(115~\text{cm}\) | 4. | \(332~\text{cm}\) |
Level 3: 35%-60%
NEET - 2023
Hints
A copper wire of radius \(1\) mm contains \(10^{22}\) free electrons per cubic metre. The drift velocity for free electrons when \(10\) A current flows through the wire will be:
(Given, charge on electron = \(1.6\times10^{-19}\) C)
(Given, charge on electron = \(1.6\times10^{-19}\) C)
| 1. | \(\dfrac{6.25\times10^4}{\pi}\) m/s | 2. | \(\dfrac{6.25}{\pi}\times10^3\) m/s |
| 3. | \(\dfrac{6.25}{\pi}\) m/s | 4. | \(\dfrac{6.25\times10^5}{\pi}\) m/s |
Subtopic: Current & Current Density |
74%
Level 2: 60%+
NEET - 2023
Hints
A certain wire \(A\) has resistance \(81~\Omega.\) The resistance of another wire \(B\) of the same material and equal length but of diameter thrice the diameter of \(A\) will be:
| 1. | \(81~\Omega\) | 2. | \(9~\Omega\) |
| 3. | \(729~\Omega\) | 4. | \(243~\Omega\) |
Subtopic: Derivation of Ohm's Law |
75%
Level 2: 60%+
NEET - 2023
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