1
NEET 2023
+4
-1

If the galvanometer $$G$$ does not show any deflection in the circuit shown, the value of $$R$$ is given by:

A
50 $$\Omega$$
B
100 $$\Omega$$
C
400 $$\Omega$$
D
200 $$\Omega$$
2
NEET 2023
+4
-1

Resistance of a carbon resistor determined from colour codes is $$(22000 \pm 5 \%) \Omega$$. The colour of third band must be :

A
Green
B
Orange
C
Yellow
D
Red
3
NEET 2023
+4
-1

The resistance of platinum wire at $$0^{\circ} \mathrm{C}$$ is $$2 ~\Omega$$ and $$6.8 ~\Omega$$ at $$80^{\circ} \mathrm{C}$$. The temperature coefficient of resistance of the wire is :

A
$$3 \times 10^{-3} \mathrm{C}^{-1}$$
B
$$3 \times 10^{-2} \mathrm{C}^{-1}$$
C
$$3 \times 10^{-10} \mathrm{C}^{-1}$$
D
$$3 \times 10^{-4} \mathrm{C}^{-1}$$
4
NEET 2023
+4
-1

10 resistors, each of resistance $$\mathrm{R}$$ are connected in series to a battery of emf $$E$$ and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased $$n$$ times. The value of $$n$$ is :

A
100
B
1
C
1000
D
10
EXAM MAP
Medical
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