1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
A battery consists of a variable number n of identical cells (having internal resistance r each) which are connected in series. The terminals of the battery are short-circuited and the current I is measured. Which of the graphs shows the correct relationship between I and n?
A
NEET 2018 Physics - Current Electricity Question 37 English Option 1
B
NEET 2018 Physics - Current Electricity Question 37 English Option 2
C
NEET 2018 Physics - Current Electricity Question 37 English Option 3
D
NEET 2018 Physics - Current Electricity Question 37 English Option 4
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
A carbon resistor of (47 $$ \pm $$ 4.7) k$$\Omega $$ is to be marked with rings of different colours for its identification. The colour code sequence will be
A
Violet – Yellow – Orange – Silver
B
Yellow – Violet – Orange – Silver
C
Yellow – Green – Violet – Gold
D
Green – Orange – Violet – Gold
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. The current drawn is I. Now, the n resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10I. The value of n is
A
10
B
11
C
20
D
9
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
A metallic rod of mass per unit length 0.5 kg m–1 is lying horizontally on a smooth inclined plane which makes an angle of 30° with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0.25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is
A
7.14 A
B
5.98 A
C
14.76 A
D
11.32 A
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