EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET - 20 Aug 2021 Forenoon>Q 6

EASY

AP EAPCET

IMPORTANT

Earn 100

Five current carrying conductors meet at a point $P$ . What is the magnitude and direction of the current in the fifth conductor?

50% studentsanswered this correctly

Important Questions on Current Electricity

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET 2020 (Sep-23 Shift-1)>Q 7

The colour code for a resistance of

22 Ω \pm 5 %

is _____

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET 2021 (19-Aug Afternoon)>Q 8

The length of germanium rod is

0.925 cm

and its area of cross section is

1 {mm}^{2}

. If for germaniun

n_{i} =

2.5 \times 10^{19} m^{- 3}, μ_{h} = 0.19 m^{2} / v - s, μ_{e} = 0.39 m^{2} / v - s

, then the resistance of the rod is

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET - 20 Aug 2021 Afternoon>Q 9

The conductivity of a conductor decreases with temperature because, on heating:

HARD

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET 2018 (25-APR Shift-1)>Q 10

In a potentiometer, a wire of length

10 m

having resistance

50 Ω

is used. A battery of

5 V

and a resistor of

450 Ω

are connected in series to the wire. If an unknown battery of emf

' E'

balances the potentiometer at

450 cm

, then the value of

E

is

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Current Electricity>AP EAPCET 2021 (19-Aug Afternoon)>Q 11

In a potentiometer of

10

wires, the balance point is obtained on the

6^{th}

wire. To shift the balance point to

8^{th}

wire, we should