1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
A charged particle having drift velocity 7.5$$ \times $$10-4 ms-1 in an electric field of 3$$ \times $$10-10 Vm-1 has a mobility in m2 V-1s-1 of :
A
2.5 $$ \times $$106
B
2.5 $$ \times $$10-6
C
2.25 $$ \times $$10-15
D
2.25 $$ \times $$1015
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Which of the following graph represents the variation of resistivity ($$\rho $$) with temperature (T) for copper?
A
NEET 2020 Phase 1 Physics - Current Electricity Question 20 English Option 1
B
NEET 2020 Phase 1 Physics - Current Electricity Question 20 English Option 2
C
NEET 2020 Phase 1 Physics - Current Electricity Question 20 English Option 3
D
NEET 2020 Phase 1 Physics - Current Electricity Question 20 English Option 4
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The solids which have the negative temperature coefficient of resistance are :
A
insulators only
B
semiconductors only
C
insulators and semiconductors
D
metals
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Six similar bulbs are connected as shown in the figure with a DC source of emf E, and zero internal resistance.

The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section A and one from section B are glowing, will be : NEET 2019 Physics - Current Electricity Question 31 English
A
4 : 9
B
9 : 4
C
1 : 2
D
2 : 1
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